not having made up one's mind (of an issue, problem, etc) not agreed or decided upon
someone who has not made up his or her mind
WordReference Random House Learner's Dictionary of American English © 2026
un•de•cid•ed /ˌʌndɪˈsaɪdɪd/USA pronunciation
adj.
n. [countable]
WordReference Random House Unabridged Dictionary of American English © 2026- having the result in doubt:The contest was still undecided.
- not having one's mind made up:undecided about where to shop.
n. [countable]
- a person who is undecided.
un•de•cid•ed
(un′di sī′did),USA pronunciation adj.
n.
un′de•cid′ed•ly, adv.
un′de•cid′ed•ness, n.
- not decided or determined.
- not having one's mind firmly made up.
n.
- a person who is undecided:Are you still among the undecideds?
- un-1 + decided 1530–40
un′de•cid′ed•ness, n.
- 2.See corresponding entry in Unabridged indecisive, fluctuating, wavering, vacillating; irresolute.
Collins Concise English Dictionary © HarperCollins Publishers::
'undecided' also found in these entries (note: many are not synonyms or translations):
air
- as
- balance
- depend
- don't-know
- double-minded
- doubt
- doubtful
- draw
- dubious
- fence
- fence-sitter
- fire
- future
- hang
- hanging
- hesitant
- indecisive
- lump
- mammer
- mind
- one
- open
- open question
- pend
- pendency
- pendent
- pending
- pendulous
- shilly-shally
- suspense
- suspensive
- torn
- undetermined
- unsettled
- waver
- weak