/ɪn'sensəbl; ɪn`sɛnsəbl/
adj (fml 文)
1 unconscious as the result of injury, illness, etc （因伤、病等）昏迷不醒的, 失去知觉的
*knocked insensible by a falling rock 被落石击中而失去知觉.
2 [pred 作表语] ~ (of sth) without knowledge (of sth); unaware 一无所知; 未觉察到
*be insensible of (one's) danger 对（自己）面临的危险懵然无知
* I'm not insensible how much I owe to your help. 你帮了我这许多忙, 我不是不知道的.
3 [pred 作表语] ~ (to sth) not able to feel (sth); insensitive(2) 无知觉; 无感觉
*insensible to pain, cold, etc 对疼痛、寒冷等无感觉.
4 [attrib 作定语] (of changes) too small or gradual to be noticed; imperceptible （指变化）（因细微或缓慢）不易觉察的, 感觉不到的
*by insensible degrees 不知不觉地.

adj formal
not knowing about something that could happen to you
= unawareinsensible of
　She remained insensible of the dangers that lay ahead.
unable to feel something or be affected by it
insensible to/of
　insensible to the cold
literary not conscious
　He fell to the ground, insensible.
>insensiblyadv