1. (a.) Incapable of being reduced, simplified, or lessened; as, irreducible troubles\; incapable of restoration to its proper or normal condition; as, an irreducible hernia.

2. (a.) Incapable of being reduced to a simpler form of expression; as, an irreducible formula.

a certain an any any one atomic austere bare basic called for chaste deep-seated either elementary esoteric essential exclusive fundamental homely homespun homogeneous immanent implanted implicit inalienable indicated indispensable individual indivisible indwelling inextricable infixed ingrained inherent inner integral internal intrinsic inward inwrought irreductible irreplaceable lone mere monadic monistic monolithic necessary needed needful of a piece one plain prerequisite primal primary private pure pure and simple required requisite resident secret severe simon-pure simple single singular sole solid solitary spare stark subjective unadorned unalienable unanalyzable unchallengeable uncluttered undifferenced undifferentiated undivided unforgoable uniform unique unitary unquestionable unsolvable vital wanted whole