Definitions from Wiktionary (unheard-of)
▸ adjective: Previously unknown; unprecedented.
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▸ adjective: Previously unknown; unprecedented.
Similar:
unknown,
unprecedented,
unheard of,
unexampled,
unprecedental,
unseen,
unpresidented,
unforeknown,
undreamed-of,
unpreceded,
more...
Opposite:
▸ Words similar to Unheard-of
▸ Usage examples for Unheard-of
▸ Idioms related to Unheard-of
▸ Wikipedia articles (New!)
▸ Popular nouns described by Unheard-of
▸ Words that often appear near Unheard-of
▸ Rhymes of Unheard-of
▸ Invented words related to Unheard-of