IPA: /ˌɪnɪˈlæstɪk/
KK: /ɪnɪˈlæstɪk/
Not able to stretch or change shape easily; rigid and unable to adapt to changes.
The material used in the construction was inelastic, making it difficult to adjust to temperature changes.
Inelastic → It is formed from "in-" (meaning not) and "elasticus" (from Latin, meaning flexible or stretchable). The word "inelastic" describes something that is not flexible or does not stretch.
Think of 'not' ('in-') being combined with 'flexible' ('elasticus') — that's why inelastic means something that doesn't stretch or bend.