obsoleteness Definition

obsolete
adj

1. No longer in use or in practice.
2. Out of date; outmoded.

Thesaurus: old-fashioned, out of date, antiquated, old hat, archaic, ancient, anachronistic, dated, outmoded, passé; Antonym: contemporary, current, modern, new, up-to-date.
3. biol.
Said of organs, etc: vestigial; no longer functional or fully developed.

Derivative: obsoletely
adverb

Derivative: obsoleteness
noun

Etymology: 16c: from Latin obsoletus worn out, from obsolescere to fall into disuse, perhaps from ob- in the opposite direction + solere to be accustomed to.