scrutinise vs size up

scrutinise and size up both are verbs.

Word	Noun	Adjective	Verb	Adverb
scrutinise	No	No	Yes	No
size up	No	No	Yes	No

As verbs, scrutinise and size up are synonyms defined as:

scrutinise and size up: to look at critically or searchingly, or in minute detail

Other synonyms of scrutinise include scrutinize, take stock.

scrutinise (verb)	size up (verb)
examine carefully for accuracy with the intent of verification	to look at critically or searchingly, or in minute detail
to look at critically or searchingly, or in minute detail