indefinite

The adjective indefinite describes something that is vague or not clearly defined: “After injuring her knee in a riding accident, Gloria postponed her vacation for an indefinite period of time.”

You’ve probably noticed that a big chunk of the word indefinite is made up of a familiar word, definite — which means “specific” or “clearly defined.” The two words have common origins in the Latin word definitus (“definite”), but indefinite’s in- prefix gives the word the opposite meaning — "not clearly defined". Indefinite, wonderfully vague and undefined, is your friend for those times when your plans are up in the air (“indefinite plans”) or you don’t want to be pinned down to any particular timeframe (“on indefinite hiatus”).

Definitions of indefinite
  1. adjective
    vague or not clearly defined or stated
    “must you be so indefinite?”
    “amorphous blots of color having vague and indefinite edges”
    “he would not answer so indefinite a proposal”
    Synonyms:
    unclear
    not clear to the mind
    undefined, vague
    not precisely limited, determined, or distinguished
    coy
    showing marked and often playful or irritating evasiveness or reluctance to make a definite or committing statement
    indecisive
    not clearly defined
    nebulous, unfixed
    lacking definition or definite content
    noncommittal
    refusing to bind oneself to a particular course of action or view or the like
    one
    indefinite in time or position
    indistinct
    not clearly defined or easy to perceive or understand
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    Antonyms:
    definite
    precise; explicit and clearly defined
    clear
    readily apparent to the mind
    defined
    clearly characterized or delimited
    certain
    definite but not specified or identified
    decisive
    unmistakable
    decided, distinct
    recognizable; marked
    distinct
    easy to perceive; especially clearly outlined
    explicit, expressed
    precisely and clearly expressed or readily observable; leaving nothing to implication
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  2. adjective
    not decided or not known
    “were indefinite about their plans”
    “plans are indefinite
    Synonyms:
    uncertain
    not established beyond doubt; still undecided or unknown
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