"of or pertaining to tasting," 1680s, from Latin gustatus "sense of taste; a taste" (noun use of past participle of gustare "to taste;" from PIE root *geus- "to taste; to choose") + -ory. Gustative is from 1610s.
gushy
gusset
gussy
gust
gustation
gustatory
Gustavus
gusto
gusty
gut
gut-bucket