size up
B2Informal to neutral. Common in spoken and informal written English.
Definition
Meaning
To assess or evaluate something or someone, especially by forming a quick judgment of their qualities, capabilities, or suitability.
To examine or observe someone/something carefully in order to make a judgment; often involves evaluating a person's character, measuring a space or situation for fit, or gauging the difficulty of a task or opponent.
Linguistics
Semantic Notes
A separable phrasal verb (e.g., 'size him up', 'size up the situation'). Primarily transitive. The meaning relates to forming an estimate or conclusion through visual or mental examination.
Dialectal Variation
British vs American Usage
Differences
Usage and meaning are virtually identical. No significant syntactic or semantic differences.
Connotations
Slightly more common in American English, but perfectly standard in both. In business/sports contexts, carries a slightly competitive or strategic connotation.
Frequency
Somewhat more frequent in American English, particularly in business, sports, and military contexts. Still a standard phrase in British English.
Vocabulary
Collocations
Grammar
Valency Patterns
[Subject] + size up + [Direct Object][Subject] + size + [Object Pronoun] + upVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “take someone's measure”
Usage
Context Usage
Business
Used to evaluate competitors, market opportunities, or potential partners. (e.g., 'We need to size up the new startup before investing.')
Academic
Rare in formal academic writing but can appear in social sciences when discussing perception or assessment. (e.g., 'Participants were asked to size up the credibility of the speaker.')
Everyday
Common for judging people, social situations, or tasks. (e.g., 'I sized him up as a possible new friend.' 'Let me size up how much paint we'll need.')
Technical
Used in fields like construction or tailoring to mean 'measure for fit,' but this is a more literal use. (e.g., 'The carpenter sized up the doorframe.')
Examples
By Part of Speech
verb
British English
- The boxer took a moment to size up his opponent.
- We need to size up the workload before committing.
- She quickly sized him up as he entered the room.
American English
- The coach told the team to size up the competition.
- I'm sizing up the new guy to see if he'll fit in.
- He sized up the project's timeline in his head.
adverb
British English
- Not applicable as an adverb form.
American English
- Not applicable as an adverb form.
adjective
British English
- The sizing-up process was crucial.
- He gave her a sizing-up glance.
American English
- The size-up report was due Friday.
- Her quick size-up of the room was impressive.
Examples
By CEFR Level
- The cat sized up the dog before deciding to run.
- I need to size up this wall before I buy a poster.
- Can you size up the situation and tell me what you think?
- The interview is a chance for both the candidate and the employer to size each other up.
- A good leader can quickly size up a team's strengths and weaknesses.
- He spent the first meeting sizing up his new colleagues.
- Geopolitical analysts are constantly sizing up the shifting balance of power.
- The detective's trained eye allowed him to size up a crime scene in minutes.
- Before the merger, each company discreetly sized the other up through market analysts.
Learning
Memory Aids
Mnemonic
Imagine a tailor using his eyes to SIZE UP a customer—looking them up and down to figure out what UP-sized (or other size) clothes will fit.
Conceptual Metaphor
EVALUATION IS MEASUREMENT (from the literal act of determining physical size).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not translate literally as "делать размер вверх."
- Avoid confusing with "to size" (определять размер). "Size up" is about judgment, not just measurement.
- Do not use where a simpler verb like "look at" or "think about" would suffice. It implies active assessment.
Common Mistakes
- Using it intransitively (e.g., 'He sized up.' is incomplete). It requires an object.
- Confusing it with 'sum up' (to summarize).
- Misspelling as 'sizeup' (should be two words or hyphenated as 'size-up' when used as a noun).
Practice
Quiz
Which of the following sentences uses 'size up' INCORRECTLY?
FAQ
Frequently Asked Questions
Yes. It can be used for people, situations, problems, physical spaces, tasks, etc. (e.g., 'size up the job,' 'size up the room').
Yes, the hyphenated noun 'size-up' is used, especially in American English (e.g., 'Give me your size-up of the new manager.').
'Size up' is more informal and often implies a quicker, more visual, or instinctive judgment. 'Assess' is more formal and suggests a more systematic or thorough evaluation.
No. While 'size down' can exist in fashion/retail (to choose a smaller size), it is not a common phrasal verb antonym for the evaluative meaning of 'size up.' The conceptual opposite is to 'misjudge' or 'ignore.'