Definitions from Wiktionary (not have the first idea)
▸ verb: To not know anything about something.
▸ Words similar to not have the first idea
▸ Usage examples for not have the first idea
▸ Idioms related to not have the first idea
▸ Wikipedia articles (New!)
▸ Words that often appear near not have the first idea
▸ Rhymes of not have the first idea
▸ Invented words related to not have the first idea
▸ verb: To not know anything about something.
Similar:
not have the faintest idea,
not have the faintest,
have no idea,
know beans about,
not know which end is up,
unken,
know of,
draw a blank,
miss the memo,
have none of it,
more...
Opposite:
▸ Words similar to not have the first idea
▸ Usage examples for not have the first idea
▸ Idioms related to not have the first idea
▸ Wikipedia articles (New!)
▸ Words that often appear near not have the first idea
▸ Rhymes of not have the first idea
▸ Invented words related to not have the first idea