Fulsome, a.
Etymology: [Full, a. + -some.]
1. Full; abundant; plenteous; not shriveled. [Obs.] His lean, pale, hoar, and withered corpse grew fulsome, fair, and fresh. Golding.
2. Offending or disgusting by overfullness, excess, or grossness; cloying; gross; nauseous; esp., offensive from excess of praise; as, fulsome flattery. And lest the fulsome artifice should fail Themselves will hide its coarseness with a veil. Cowper.
3. Lustful; wanton; obscene; also, tending to obscenity. [Obs.] "Fulsome ewes." Shak. -- Ful"some*ly, adv. -- Ful"some*ness, n. Dryden.
Shades of meaning
Fernald lists fulsome only as an antonym, under tasteful.
He lists it without comment; the entries above explain its neighbors.
Synonyms
none given