IPA: /ɪnˈsɛnʃəns/
KK: /ɪnˈsɛnʃəns/
The state of being unable to feel or perceive things; lacking awareness or consciousness.
The insentience of the material made it unsuitable for the project that required sensitivity.
Insentience is formed from "in-" (meaning not) and "sentient" (from Latin "sentire", meaning to feel or perceive) and the suffix "-ence" (meaning the state of). The word describes the state of being without feeling or perception.
Think of 'not feeling' ('in-' means not, and 'sentient' relates to feeling) to remember that insentience refers to a lack of sensation or awareness.