Backward Versus Backwards: Choosing the Right Form in English Grammar

Writers often pause at the keyboard when they reach for the adverb that means “toward the rear.” Should it be “backward” or “backwards”? The hesitation is understandable: both forms circulate in books, blogs, and everyday speech, yet style guides send mixed signals.

This article dissects the difference, maps regional preferences, and supplies concrete tactics so you can pick the right form without second-guessing yourself in front of readers, editors, or search algorithms.

Historical Split: How Two Forms Emerged from One Old English Word

Old English had “bæcweard,” a compound of “bæc” (back) and the directional suffix “-weard.” Over centuries, the suffix attracted an adverbial “-s,” giving Middle English “bakwardes.” Scribes alternated between the bare and the “-s” variants for rhythm, meter, or simple whim.

By Early Modern English, printers in London standardized many adverbs without “-s,” but provincial manuscripts kept the ending. The split hardened when Noah Webster’s 1828 dictionary promoted “-ward” adverbs as “cleaner,” while British lexicographers recorded both. Today the echo of that centuries-old divergence still shapes global usage.

Contemporary Frequency: Corpus Data That Reveals Real-World Ratios

Google’s N-gram viewer shows “backward” outpacing “backwards” in American English by 3:1 since 1980. Flip the filter to British English and the ratio reverses: “backwards” leads 2:1 and has widened the gap every decade.

The Corpus of Contemporary American English tags 78 % of academic papers with “backward,” whereas the British National Corpus awards 65 % of its hits to “backwards.” These numbers are not static; they shift with genre, audience age, and editorial house style.

Regional Style Guides: Chicago, Oxford, and the ABC of Press Houses

Chicago Manual of Style, 17th edition, prescribes “backward” for all adverbial uses, calling the “-s” form “chiefly British.” Oxford Style Guide concedes both but labels “backwards” the “traditional form” in British English. Australian Government Style Manual follows Oxford, yet Canada’s Editing Canadian English sides with Chicago to harmonize with U.S. trade partners.

If you write for an international journal, check the sponsor’s location first; a Toronto-based quarterly may silently change your “backwards” to “backward” during copy-edit.

AP vs. APA: Micro-differences Inside American English

Associated Press pushes “backward” in news copy, full stop. American Psychological Association allows either but adds a footnote: be consistent within each manuscript. Thus a psychology dissertation can use “backwards” throughout, yet a wire service article cannot.

Adverb vs. Adjective: The Only Rule That Never Changes

“Backward” wears two grammatical hats; “backwards” only one. When the word modifies a noun, drop the “-s” everywhere: “a backward society,” “backward compatibility,” “backward pass.” When it modifies a verb, an adjective, or another adverb, you may add the “-s” if your dialect permits.

Test the sentence by replacing the word with “toward the rear.” If the sentence still makes sense, you need the adverbial form; then choose either “backward” or “backwards” according to your regional audience.

Quick Diagnostic Swap

Swap: “She glanced backward(s)” → “She glanced toward the rear.” The replacement works, so an adverb is correct. Now try: “They live in a backward(s) village.” The replacement fails, confirming you need the adjective “backward.”

Syntax Secrets: Position in the Clause Influences the Sound

Place the adverb after the verb and British ears tolerate “backwards” better: “He stepped backwards.” Front the adverb for emphasis and the bare form feels sleeker even to Britons: “Backward he stepped into the spotlight.”

Sentence-final position also nudges American writers toward “backward” to avoid the hiss: “Never look backward.” The same writers may accept “backwards” mid-sentence where rhythm buries the suffix: “She backwards-walked the tightrope.” Although hyphenation is rare, it illustrates how position colors acceptability.

SEO and Keyword Strategy: Ranking for Both Variants Without Cannibalization

Google’s keyword planner treats “backward” and “backwards” as separate entities, yet the algorithm folds them under one semantic cluster. A page optimized solely for “backward” still surfaces for “backwards” queries, but click-through rates rise when both appear naturally in the copy.

Deploy the primary variant in your H1 and title tag, then seed the secondary variant once in the first 100 words and once in an H2. This satisfies regional expectations without stuffing. Add schema markup that lists both alternate names; JSON-LD lets you remain agnostic while telling the crawler you recognize the variant.

Anchor-Text Rotation

When guest-posting, rotate anchor text: one site links “running backward,” another “walking backwards.” The varied anchors strengthen backlink profiles for the same URL and capture both spelling communities.

Literary Soundscapes: How Fiction Writers Exploit the Final Sibilant

Thrillers set in the U.S. often drop the “-s” to keep prose hard and fast: “He fell backward, gun raised.” British historical novels retain “backwards” for period flavor: “The carriage lurched backwards.”

Poets manipulate meter: the extra syllable in “backwards” can turn iambic pentameter into a feminine ending, softening a line. Audiobook narrators report that “backwards” invites a longer vowel, adding suspense in dialogue tags like “‘Step backwards,’ she whispered.”

Technical Documentation: Consistency Protocols for Code and Manuals

Software strings freeze the spelling forever once shipped. Android’s source code comments use “backward compatibility” as a compound adjective, never “backwards,” to align with U.S. engineering norms. A mismatched string triggers linter flags, so tech writers add a glossary entry day one.

Version-control hooks can enforce the choice: a pre-commit script greps for “backwards” in .md files and rejects the push if the team chose American English. The same repo allows “backwards” in en-gb locale folders, proving that automation can respect human variety when configured early.

Speech Therapy and Education: Teaching Kids the Shorter Form First

Therapists target the uninflected “backward” for children with final-consonant deletion. One syllable less reduces cognitive load, letting the child focus on the direction concept rather than the morphological marker. Worksheets pair a picture of a crab walking “backward” with the single-word caption.

Once mastered, the “-s” variant appears in contrast drills: “Can you say it the other way? Backwards.” The progression mirrors how kids learn “toward” before “towards,” establishing a template for all directional adverbs.

Marketing Copy: A/B Testing the Spelling in Email Subject Lines

An online fitness brand split-tested “Run Backward to Save Your Knees” against “Run Backwards to Save Your Knees” among 40 000 U.S. subscribers. The “backward” variant posted a 2.3 % higher open rate and 7 % lift in click-through, presumably because the shorter form scans faster on mobile previews.

When the same test ran in the U.K. list, the “backwards” subject line edged ahead by 1.8 %, validating regional instinct. The takeaway: localize even micro-morphology if the campaign is narrow-cast; keep it consistent if the list is global.

Legal Drafting: Why Statutes Favor the Shorter Adverb

U.S. federal regulations prefer “backward” to reduce syllable count and potential ambiguity. The Consumer Product Safety Commission mandates that treadmill warnings state “Never walk backward on belt,” leaving no room for dialectal variation. Legislative drafters argue that the “-s” could be misread as plural under extreme statutory interpretation, so they excise it.

Contracts follow suit: indemnity clauses reference “backward compatibility obligations” without the suffix, ensuring that future litigants cannot claim a typo introduced a separate duty.

Screenwriting and Subtitles: Character Voice Through Micro-dialect

Netflix style sheets tag characters with dialect profiles. A Yorkshire farmer keeps “backwards” in dialogue to signal authenticity, while a Boston scientist uses “backward.” Subtitles retain these choices even when audio is dubbed, because the spelling cues the viewer’s inner ear.

Script supervisors maintain a continuity log that records each instance; a single lapse can break immersion for linguistically savvy audiences. The decision ripples into merchandising: the novelization must mirror the script’s spelling to preserve canon.

Accessibility and Readability: Screen Readers and the Sibilant

NVDA and JAWS treat “backwards” as two morphemes, inserting a micro-pause that can split the rhythm of quick instructions. Usability tests show that blind users comprehend “backward” 200 ms faster in rapid-fire navigation commands. Web Content Accessibility Guidelines therefore recommend the shorter form for alt-text and aria-labels, unless the page explicitly targets British English.

Voice assistants follow the same heuristic: Alexa’s U.S. model defaults to “backward,” while the U.K. model samples “backwards” 70 % of the time, training itself on local corpora.

Corpus Hacking: Using Regex to Audit Your Own Archive

A single grep command can surface every instance: grep -Ei 'backward[s]?b' *.md. Pipe the output into a Python script that tallies by file, date, and author. Flag any file that contains both forms; inconsistency harms credibility more than choosing the “wrong” dialect.

Automated style checkers like Vale or proselint can enforce the rule at CI time, rejecting pull requests that introduce the alternate spelling. The upfront config cost is minutes; the downstream editorial savings are hours per release cycle.

Global English Compromise: Drafting for Dual Audiences

When you must serve both regions in one document, pick the form that matches the issuer’s legal headquarters, then add a concise footnote on first use: “Hereafter, backward (backward[s] in British English).” This single parenthesis grants permission to British readers without forcing a global find-and-replace that could break templates.

Avoid alternation within paragraphs; the human eye spots inconsistency faster than any algorithm. If you need to quote a British source, preserve its original spelling and add “[sic]” only if the surrounding text is American, preventing reader distraction.