one-off Synonyms

limited to a single time made-to-order world-beater tailor-made ad hoc unusual unique unified uniform uncommon sui generis specific individualist custom-built 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 one-of-a-kind rare bird special solitary isolated individual idiosyncratic freak extraordinary exclusive exceptional distinctive distinct curiosity bespoke lone nonce sole singularity singular singleton single remarkable rarity punctiform only once