one-off Synonyms

limited to a single time individualist world-beater tailor-made ad hoc unusual unique unified uniform uncommon rare bird nonrenewable one-of-a-kind happens only once happening only once just a one-off one-time thing done only once unrepeatable once-in-a-lifetime non-recurring one-time sui generis specific special individual idiosyncratic freak extraordinary exclusive exceptional distinctive distinct curiosity isolated lone nonce solitary sole singular single remarkable rarity only once oddity alone