UNSATISFACTORY

unsatisfactory

(adjective) not giving satisfaction; “shops should take back unsatisfactory goods”; “her performance proved to be unsatisfactory”; “life is becoming increasingly unsatifactory”; “our discussion was very unsatisfactory”

Source: WordNet® 3.1

Etymology

Adjective

unsatisfactory (comparative more unsatisfactory, superlative most unsatisfactory)

inadequate, substandard or not satisfactory

Source: Wiktionary