(often used as a combining form) in a good or proper or satisfactory manner or to a high standard ('good' is a nonstandard dialectal variant for 'well'). Synonym: good. "A task well done" , "The party went well" , "He slept well" , "A well-argued thesis" , "A well-seasoned dish" , "A well-planned party" , "The baby can walk pretty good" Antonym: ill.