adj. 25B6; adjective
an indefinite period : INDETERMINATE, unspecified, unlimited, unrestricted, undecided, undetermined, undefined, unfixed, unsettled, unknown, uncertain; limitless, infinite, endless, immeasurable.
an indefinite meaning : VAGUE, ill-defined, unclear, loose, general, imprecise, inexact, nebulous, blurred, fuzzy, hazy, obscure, ambiguous, equivocal.
fixed, clear.