suck up vs play up

suck up and play up both are verbs.

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

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

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

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

suck up (verb)	play up (verb)
try to gain favor by cringing or flattering	move into the foreground to make more visible or prominent
take in, also metaphorically	ingratiate oneself to; often with insincere behavior
ingratiate oneself to; often with insincere behavior