In*du"bi*ta*ble (?), a. [L. indubitabilis: cf. F. indubitable. See In- not, and Dubitable.]
Not dubitable or doubtful; too evident to admit of doubt; unquestionable; evident; apparently certain; as, an indubitable conclusion.
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n.
That which is indubitable.
Syn. -- Unquestionable; evident; incontrovertible; incontestable; undeniable; irrefragable.
© Webster 1913.