1) Dead 2) Inflexible 3) Lacking flexibility 4) Lacking resilience 5) Nonresilient 6) Not elastic 7) Not stretchy 8) Rigid 9) Springless 10) Unyielding 1) Inelasticity 2) Nonresilient 3) Rigid 4) Springless 
• (a.) Not elastic.
Having an elasticity less than one. For a price elasticity of demand, this means that expenditure falls as price falls. For an income elasticity it means that expenditure share falls with rising income. Contrasts with elastic and unit elastic.
One variable is unresponsive to changes in another.
(in″e-las´tik) lacking elasticity.
In`e·las'tic adjective Not elastic. 
Refers to the economic concept of the inability to quickly adjust supply or demand despite changes in market conditions. 
[adj] - not elastic
A collision or interaction in which kinetic energy is not conserved. See also: Elastic Collisions, Kinetic Energy.
adjective not elastic; `economists speak of an inelastic price structure`
not elastic; lacking flexibility or resilience; unyielding. · relatively unresponsive to changes, as demand when it fails to increase in proportion to a decrease in price. Cf. elastic (def. 6).
Inelastic is an economic term that refers the demand or supply of a good or service that is not influenced by changes in the price of the good or service.