Synonyms of butter up

verbTo flatter, especially with the intent of personal gain.

• kiss upTo pay false flattery to another, particularly a superior at work, in order to get special attention.
• suck upTo absorb (fluid).
• toadyTo behave like a toady (toward someone).
• blandishTo persuade someone by using flattery; to cajole.
• cajoleTo persuade someone to do something which they are reluctant to do, especially by flattery or promises; to coax.
• sweeten
• fast-talkTo use clever speech in order to persuade, mislead, or manipulate someone.
• canoodle figurativelyTo cajole or persuade (someone).
• carny dialectalTo cajole, wheedle, or coax.
• coax
• collogueTo coax (someone); also, to flatter (someone).
• fleech ScotlandTo wheedle; coax; cajole; induce with fair words; flatter.
• honey around figurativelyTo cajole or sweet-talk (someone); to hang out around (someone) as a yes-man or toady.
• inveigle
• soft-sawderTo flatter or cajole.
• soft-soapTo attempt to persuade by flattery or pleasing words; to butter up.
• stroke US, figurativelyTo influence (someone) by convincing or flattering them.
• sweet-talkTo influence or urge by gentle caressing or flattering.
• twistTo coax.
• wheedleTo cajole or attempt to persuade by flattery.
• apple-polish USTo attempt to obtain favors, especially by flattery; to toady or fawn.
• bootlickTo seek favor from by fawning, servile behavior.
• bow and scrapeTo behave in a servile, obsequious, or excessively polite manner.
• brownnoseTo flatter someone (especially a superior) in an obsequious manner, and to support their every opinion.
• dickride vulgarTo behave in a submissive, subservient, or overflattering manner toward.
• duchess AustraliaTo court or curry favour for political or business advantage; to flatter obsequiously.
• fawnTo seek favour by flattery and obsequious behaviour.
• fawn overTo praise excessively in order to get a favor.
• fellate figuratively, vulgarTo suck up to, to flatter or be shamefully subservient to.
• flannelTo flatter; to suck up to.
• kiss someone's ass vulgarTo flatter someone (especially a superior) in an obsequious manner, and to support their every opinion to gain their...
• kiss someone's ringTo give respect or reverence to someone; to express servitude to someone.
• kowtow figuratively
• lick someone's ass vulgarTo flatter someone (especially a superior) in an obsequious manner, and to support their every opinion.
• lick someone's balls vulgarTo act in a subservient manner; to suck up to.
• overflatterTo flatter unduly or excessively; to overpraise.
• overpraiseTo do so toward a person.
• overrateTo esteem too highly; to give greater praise than due.
• blandander Ireland, datedTo flatter or cajole.
• croodle UK, dialectalTo fawn or coax.
• engle obsolete
• honey up dated, figurativelyTo cajole, suck up to or sweet-talk (someone).
• hum UK, datedTo flatter by approving; to cajole; to deceive or impose upon; to humbug.
• ingle obsoleteTo cajole or coax; to wheedle.
• soap dated, slangTo flatter; to wheedle.
• tweedle obsoleteTo influence as if by fiddling; to coax; to allure.
• whilly Scotland, archaicTo cajole.
• word obsoleteTo flatter with words, to cajole.