n. [ Cf. F. insensibilité. ] [ 1913 Webster ]

1. The state or quality of being insensible; lack of sensibility; torpor; unconsciousness; as, the insensibility produced by a fall, or by opiates. [ 1913 Webster ]

2. Lack of tenderness or susceptibility of emotion or passion; dullness; stupidity.

Syn. -- Dullness; numbness; unfeelingness; stupidity; torpor; apathy; impassiveness; indifference. [ 1913 Webster ]

a. [ L. insensibilis: cf. F. insensible. See In- not, and Sensible. ] [ 1913 Webster ]

1. Destitute of the power of feeling or perceiving; wanting bodily sensibility; unconscious. Milton. [ 1913 Webster ]

2. Not susceptible of emotion or passion; void of feeling; apathetic; unconcerned; indifferent; as, insensible to danger, fear, love, etc.; -- often used with of or to. [ 1913 Webster ]

Accept an obligation without being a slave to the giver, or insensible to his kindness. Sir H. Wotton. [ 1913 Webster ]

Lost in their loves, insensible of shame. Dryden. [ 1913 Webster ]

3. Incapable of being perceived by the senses; imperceptible. Hence: Progressing by imperceptible degrees; slow; gradual; as, insensible motion. [ 1913 Webster ]

Two small and almost insensible pricks were found upon Cleopatra's arm. Sir T. Browne. [ 1913 Webster ]

They fall away,
And languish with insensible decay. Dryden. [ 1913 Webster ]

4. Not sensible or reasonable; meaningless. [ Obs. ] [ 1913 Webster ]

If it make the indictment be insensible or uncertain, it shall be quashed. Sir M. Hale.

5. Incapable of feeling a specific sensation or emotion; as, insensible to pity. [ PJC ]

Syn. -- Imperceptible; imperceivable; dull; stupid; torpid; numb; unfeeling; apathetic; stoical; impassive; indifferent; unsusceptible; hard; callous. [ 1913 Webster ]

n. Insensibility. Bp. Hall. [ 1913 Webster ]

adv. In a manner not to be felt or perceived; imperceptibly; gradually. [ 1913 Webster ]

The hills rise insensibly. Addison. [ 1913 Webster ]