cozy up vs sidle up

cozy up and sidle up both are verbs.

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

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

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

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

cozy up (verb)	sidle up (verb)
ingratiate oneself to; often with insincere behavior	ingratiate oneself to; often with insincere behavior