unheard-ofadjective
uk/ʌnˈhɜːd.ɒv/us/ʌnˈhɝːd.ɑːv/surprising or shocking because not known about or previously experienced:
It was unheard-of for an unmarried couple to live together.
Thesaurus: synonyms and related words
New
- a breath of fresh air idiom
- afresh
- brand new
- brave new
- break the mould idiom
- breath
- injection
- innovation
- innovative
- latest
- latter-day
- mint
- minute 1
- neo-
- novel
- novelty
- original
- originality
- pristine
- revolutionary
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You can also find related words, phrases, and synonyms in the topics:
Unknown and unfamiliar