transitive. To judge, estimate, appraise; to ascertain the extent or quality of (something immaterial or unquantifiable). Cf. sense 7b.

figurative; esp. to ‘take the measure’ of (a person, his character, etc.).

transitive. To form an opinion or estimate of (a person); (now) esp. to summarize the qualities or character of.

figurative. transitive. To run one's eye up and down (a person), esp. so as to appraise or form an opinion about him or her. Hence in later use…

transitive. To draw, delineate, or describe in art or literature; to represent, portray, or characterize (a person, place, etc.), esp. successfully…

figurative. †to take measure(s), †to take a fair (also wrong, etc.) measure of: to form a fair (wrong, etc.) opinion or opinions (of) (obsolete). to…

figurative. to get (also take,etc.) a person's number: to have or make an accurate assessment of a person's true character, motives, weaknesses…

transitive. With up. To count up (money, people, etc.); to calculate or work out (a sum, a bill, etc.). Also: to size up, get the measure of (a…

transitive. U.S. To judge, regard, or assess (a person, situation, etc.) in a particular way. Obsolete.

colloquial (originally U.S.). Usually with up: To take the size or measure of; to regard so as to form an opinion of; to make an estimate of. Hence…

to weigh up: to appraise, form an estimate of (a person). colloquial.

to read the room: to be alert and responsive to the mood or behaviour of the audience one is addressing; (more generally) to remain attentive and…