no idea
Total mental blank
No idea is a casual way of saying you don't know something, often with emphasis on the completeness of your ignorance.
I have no idea where she went.
It can express genuine bewilderment or serve as a dismissive response when you don't want to engage with a question.
The phrase sometimes carries a note of exasperation or wonder: No idea how he pulled that off.
Utterly unable to understand
- bewilderedThoroughly puzzled and confused
- perplexedThoroughly confused, uncertain
- puzzledConfused by something unclear
- mystifiedUtterly unable to understand
befuddled · flummoxed · nonplussed · discombobulated · disoriented · confounded · dumbfounded · stumped
Lacking necessary knowledge
- unawareLacking knowledge of something
- obliviousLacking any awareness
- unknowingLacking awareness or information
- cluelessLacking any understanding
blank · unenlightened · inexperienced · naive · out of the loop · in the dark · unsuspecting · unfamiliar
Lacking interest or preference
- whateverExpression of apathy
- who caresDismissive indifference expression
- not my problemDismissal of accountability
- beats meAdmission of ignorance
Not having chosen
- unsureLacking confidence or certainty
- uncertainNot firmly known
- hesitantSlow to act
- ambivalentHaving contradictory feelings
torn · wavering · on the fence · up in the air · toss-up · open question · unresolved · unclear
baffled
Utterly unable to understand
- bewilderedThoroughly puzzled and confused
- perplexedThoroughly confused, uncertain
- puzzledConfused by something unclear
mystified · befuddled · flummoxed · nonplussed · discombobulated · disoriented · confounded · dumbfounded · stumped · foggy
uninformed
Lacking necessary knowledge
- unawareLacking knowledge of something
- obliviousLacking any awareness
- unknowingLacking awareness or information
clueless · blank · unenlightened · inexperienced · naive · out of the loop · in the dark · unsuspecting · unfamiliar · without a clue
don't care
Lacking interest or preference
- whateverExpression of apathy
- who caresDismissive indifference expression
- not my problemDismissal of accountability
undecided
Not having chosen
ambivalent · torn · wavering · on the fence · up in the air · toss-up · open question · unresolved · unclear · shrug
- confusionconfusion, confused, bewilderment, perplexity, baffled
- uncertaintyuncertainty, uncertain, unknown, unsure, unclear
no ideacertainty
Total absence of doubt
expertise · familiarity · informed · knowledgeable · cognizant
no ideaabsolute certainty
State of having no doubt
crystal clear · sure thing · dead certain · positive · confident
no, idea, ideal, ideas, idealism, idealize, idealist, idealized, ideation