Synonyms of flattery in English:

praise, adulation, compliments, blandishments, admiration, honeyed words, pats on the back

fawning, simpering, puffery, blarney, cajolery, wheedling

informal sweet talk, soft soap, spiel, buttering up, cosying up, toadying, currying favour, weasel words

British informal flannel

British vulgar slang arse-kissing, arse-licking

North American vulgar slang brown-nosing, ass-kissing, ass-licking

rare laudation