play up vs sidle up

play up and sidle up both are verbs.

Word	Noun	Adjective	Verb	Adverb
play up	No	No	Yes	No
sidle up	No	No	Yes	No

As verbs, play up and sidle up are synonyms defined as:

play up and sidle up: ingratiate oneself to; often with insincere behavior

Other synonyms of play up include cotton up, cozy up, shine up, suck up.

play up (verb)	sidle up (verb)
move into the foreground to make more visible or prominent	ingratiate oneself to; often with insincere behavior
ingratiate oneself to; often with insincere behavior