Roughly — all use cases
Two unrelated branches sharing one spelling: approximation before a number, force and crudeness after a verb. All seven senses, position rules, the precision ladder, why it never means rudely, and a quiz.
Overview
Part of speech: adverb
Pronunciation: /ˈrʌf.li/ — 2 syllables. ou = /ʌ/ (as in cup), gh = /f/. ✗ /ˈraʊɡli/
Level: B1 (approximation) → B2/C1 (manner senses)
Register: neutral. The approximation sense is safe in academic, business and spoken English alike.
"Without precision or refinement." Applied to a number → approximate. Applied to an action → rough, unrefined, forceful.
Quick reference — two branches
Roughly has two unrelated branches that happen to share a spelling. Learners who only know one get caught by the other.
- about, approximately (with numbers) · "Roughly 40 people showed up."
- approximately (with non-numbers) · "The two files are roughly the same size."
- roughly speaking — broadly, in general terms · "Roughly speaking, it doubles every year."
- forcefully, not gently · "He pushed the door roughly open."
- crudely, not finished neatly · "The edges were roughly cut."
- harshly, unkindly (of speech or treatment) · "She spoke roughly to him."
- badly, with difficulty (informal, of how things go) · "The launch went roughly."
Sense 1 — Approximation with numbers
The most frequent use by far. Goes directly before the quantity.
- "Roughly 200 users are affected."
- "It costs roughly €40 a month."
- "We lost roughly half the traffic."
- "The build takes roughly three minutes."
Roughly signals deliberate imprecision — "I'm rounding, don't hold me to it." Approximately signals measured imprecision, which is why it's preferred in scientific writing.
- ✗ roughly about 50 · ✗ roughly around 50 · ✗ roughly some 50
- ✅ roughly 50 · ✅ about 50 · ✅ 50 or so
Sense 2 — Approximation with non-numbers
Works with adjectives, prepositional phrases and comparisons — not just figures.
- "The two designs are roughly equivalent."
- "Revenue is roughly in line with last quarter."
- "It's roughly the size of a credit card."
- "Our timelines are roughly aligned."
- "The translation is roughly accurate."
roughly the same + noun → roughly the same price / size / shape / age / idea
Sense 3 — Roughly speaking
A discourse marker announcing a simplified overview. Sentence-initial with a comma; occasionally mid-sentence.
- "Roughly speaking, there are three ways to do this."
- "Roughly speaking, it's a queue with retries."
- "The cost, roughly speaking, doubles at that tier."
Near-identical to broadly speaking. Compare with essentially: roughly speaking flags imprecision, essentially flags reduction to the core. You can say "Roughly speaking, it's essentially a cache."
Sense 4 — Forcefully, not gently
A true manner adverb. Usually after the verb or after the object.
- "He grabbed her arm roughly."
- "The parcel had clearly been handled roughly."
- "She shoved the drawer roughly shut."
handle / treat / push / shove / grab / seize + roughly
Sense 5 — Crudely, unfinished
Describes work done quickly without care for finish. Very often with a past participle.
- "The wood was roughly cut to length."
- "I've roughly sketched the layout."
- "A roughly translated version is in the repo."
- "Roughly chopped onions." (standard in recipes)
This sense is not negative — it often just means "provisional, first pass." A roughly drafted proposal = a draft, not a bad proposal.
Sense 6 — Harshly, unkindly
Applied to speech or to the treatment of people. Slightly literary; more common in fiction than in business English.
- "'Get out,' he said roughly."
- "The prisoners were treated roughly."
Roughly here ≠ rudely. Rudely = bad manners. Roughly = harshness or physical force. See the L1 errors below.
Sense 7 — Badly, with difficulty
Informal. Describes how an event or period went. Common in spoken American English.
- "The demo went roughly."
- "The first week went roughly, but we recovered."
More usual phrasings are went badly or was rough. Recognise it; don't rely on it in writing.
Position rules
- Immediately before a number or quantity — 1 · "We shipped roughly 12 features."
- Before an adjective or participle — 2, 5 · roughly equal · roughly chopped
- *Sentence-initial + comma (roughly speaking) — 3 · "Roughly speaking,* it's linear."
- After the verb — 4, 6, 7 · "He answered roughly."
- After the object — 4 · "He pushed the chair roughly aside."
- *Bare roughly at the front of a clause — ❌ · ✗ "Roughly, it costs €40." → ✅ "It costs roughly* €40."
Sentence-initial roughly on its own is not idiomatic for approximation — you need roughly speaking, or the pre-number position.
more roughly / most roughly exist only for the manner senses ("He was treated more roughly than the others"), never for approximation.
High-frequency collocations
roughly half · roughly double · roughly a third · roughly equal · roughly equivalent · roughly comparable · roughly the same · roughly the size of · roughly in line with · roughly consistent with · roughly speaking · roughly estimated
handle roughly · treat roughly · push / shove / grab roughly · roughly cut · roughly chopped · roughly sketched · roughly hewn · roughly finished · roughly translated
Approximation words — how to choose
- roughly — rounding openly, spoken or written · signals "I'm not being precise on purpose"
- approximately — formal, technical, measured · preferred in papers and specs
- about — everyday, all registers · the most neutral default
- around — everyday, especially times and quantities · around 6pm
- some — before large round numbers, formal · some 300 delegates
- or so — after the quantity, informal · twenty or so
- give or take — after the quantity, spoken · an hour, give or take
- in the region of — formal, money and size · in the region of $2m
- circa / c. — dates, formal writing · circa 1890
- ballpark — informal, estimates · a ballpark figure
Loosest → tightest: ballpark → roughly → about / around → approximately → exactly.
Common errors (Ukrainian / Russian L1)
1. roughly ≠ rudely — the biggest one
Грубо covers both physical roughness and rudeness; English splits them.
- «Він грубо відповів.» (impolite) → ✅ "He answered rudely." — ✗ "He answered roughly" implies force or harshness, not bad manners.
- «Він грубо штовхнув двері.» (force) → ✅ "He shoved the door roughly."
2. грубо кажучи maps cleanly — use it
Грубо кажучи / грубо говоря → ✅ roughly speaking. This is a reliable one-to-one match.
3. Bare sentence-initial roughly
- ✗ "Roughly, the project takes two months."
- ✅ "The project takes roughly two months." / ✅ "Roughly speaking, the project takes two months."
4. Hedge stacking
Slavic приблизно близько 50 transfers directly.
- ✗ roughly about 50 → ✅ roughly 50
5. Adjective/adverb confusion
- ✗ a roughly draft → ✅ a rough draft
- ✗ "The sea was roughly." → ✅ "The sea was rough."
- ✅ a roughly drafted proposal (adverb modifying a participle)
6. Pronunciation
✗ /ˈrɒʊɡli/ · ✗ /ˈrɔːli/ → ✅ /ˈrʌf.li/ — "RUFF-lee". Same vowel as enough, tough, rough.
Practice
Choose roughly, rudely, rough, or roughly speaking.
1.The migration will take ___ six hours.
2.___, there are two kinds of users: readers and writers.
3.He interrupted me ___ and walked out of the meeting.
4.The guard pushed him ___ against the wall.
5.This is only a ___ estimate — I'll confirm tomorrow.
6.Our two proposals are ___ equivalent in cost.
7.She gave me a ___ idea of what the client wants.
- roughly — sense 1, before a quantity.
- roughly speaking — sense 3, the sentence-initial overview. Bare roughly can't sit here.
- rudely — bad manners, not force.
- roughly — sense 4, physical force.
- rough — the adjective, before a noun.
- roughly — sense 2, before an adjective.
- rough — the adjective; a rough idea is a fixed phrase.
One-line summary
Roughly = "without precision."
Before a number it means about; before a participle it means crudely; after a verb it means with force. It never means rudely — and it can't start a sentence unless you add speaking.
Roughly / Approximately for the pair contrast · Essentially · The Degree Ladder · Fairly.