in·e·las·tic 
(ĭn′ĭ-lăstĭk)
(ĭn′ĭ-lăstĭk)adj.
1. Lacking elasticity; unyielding or unadaptable. See Synonyms at stiff.
2. Economics Of, relating to, or being a good for which changes in price have little effect on the quantity demanded or supplied: the inelastic demand for cigarettes.
in′e·las·tici·ty (-ĭ-lă-stĭsĭ-tē) n.