obsolescent

• POS: Adjective
• HYPHEN: ob=so=les=cent

CIDE DICTIONARY

obsolescent, a. [L. obsolescens, -entis, p. pr. of obsolescere, to wear out gradually, to fall into disuse; ob (see Ob-) + solere to use, be wont.].

 Going out of use; becoming obsolete; passing into desuetude.  [1913 Webster]

OXFORD DICTIONARY

obsolescent, adj. becoming obsolete; going out of use or date.

Derivative

obsolescence n.

Etymology

L obsolescere obsolescent- (as OB-, solere be accustomed)