frowning upon (verb) discredit: blame, detract from
Sinonime: backstabber, betrayer, blabbermouth, canary, deep throat, double-crosser, fink, informant, sneak, snitch, source, squealer, stool pigeon, stoolie, tattler, tattletale, turncoat, whistle-blower
Antonime: commend,
credit,
honor,
praise