Entry 1 sense Webster, 1913 Amateurish · Am·a·teur·ish · IPA /ˈæ.mə.t͡ʃʊɚ.ɪʃ/ 01 a. In the style of an amateur; superficial or defective like the work of an amateur. 1. In the style of an amateur; superficial or defective like the work of an amateur.