Simple Definition of indefinite
: not certain in amount or length
: not clear or certain in meaning or details
Full Definition of indefinite
: not definite: as a : typically designating an unidentified, generic, or unfamiliar person or thing <the indefinite articles a and an> <indefinite pronouns> b : not precise : vague c : having no exact limits
Examples of indefinite
We're stuck here for an indefinite period of time.
Their plans have been put on indefinite hold.
She is indefinite about her plans.
Origin of indefinite
Latin indefinitus, from in- + definitus definite
First Known Use: 1530
Seen and Heard
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