seatbeltlessWiktionary 原文英美构词拆解seatbeltseatbelt词干less-less后缀-lessLacking (something); without (something). Added usually to a noun to form an adjective signifying a lack of that noun.词源说明From seatbelt + -less.释义形容词adjective1Not wearing a seatbelt; unseatbelted.2Not equipped with seatbelts.