Having no feeling or sensation, insensible; figurative not sensitive to impressions, etc.

Foolish, unwise; senseless.

Resembling, or having the character of, stone; stony. (Chiefly figurative.)

Not subject to pain. Obsolete.

figurative. Annoyingly unperceptive or slow to understand; stupid; insensitive. Also, of a remark, action, etc.: exhibiting dullness, stupidity or…

Lacking spirit; characterized by lack of animation, liveliness, or energy; (esp. of a person or animal) lacking courage or (now usually)…

Wanting in mental or moral feeling; devoid of sensibility; unaffected, unmoved; unfeeling. (Of persons, or their qualities, actions, etc.)

Without sense, awareness, or consciousness of something. Also: incapable of sympathetic or emotional responsiveness; insensitive; unfeeling. Now rare.

Of a person: lacking spirit, sensitivity, or other qualities regarded as elevated or human; (now esp.) lacking in human warmth, feeling, or…

in dull-esprited = dull-spirited.

Incapable of feeling or emotion; impassive, insensible, unimpressible.

Of blunt nature or tendency.

Impervious to intellectual or moral influences, impressions, or ideas.

Resembling a stock or block of wood; esp. of a person, excessively dull, stupid or ‘wooden’.

Dull and impassive; having little or no sensibility; incapable of being excited or moved. Also of actions, demeanour, expression of countenance, etc.

Unable or unfit to receive so as to be affected or influenced by; not open to or susceptible of; unable to ‘take in’ so as to realize, insensible…

Emotionally, morally, or spiritually dull, numb, or indifferent; lacking in natural feeling, moral sense, or spiritual awareness. Often with to. Now…

Destitute of the sense of taste; unable to taste. Also figurative. Now rare.

(un-, prefix1 affix 1)

(un-, prefix1 affix 2.)

Incapable or destitute of feeling or emotion; emotionless, callous, apathetic.

= insensible, adj. 4b.

Of a person, a person's character, actions, emotions, etc.: not easily inspired to emotion, exhibiting only faint interest or concern; spiritless…

Incapable of being stirred or affected with feeling; emotionless, impassive.

Dead in feeling, callous, insensible.

Mentally or spiritually barren. Also, unproductive of results; fruitless; barren in or of (something sought or desired).

Listless, apathetic. Obsolete. rare.

Not endowed with feeling. Obsolete. rare.

figurative. Firm, impregnable; rigidly confined or restricted; unyielding, inflexible.

Devoid of feeling or affection. Obsolete.

figurative. Wanting in animation or vigour; inactive; slow, sluggish; dull; stupefied; apathetic.

Torpid.

Deficient in, or void of, mental feeling or emotion; not susceptible to mental impressions; unimpressionable, apathetic; also, in good sense, not…

Not receptive, esp. to new suggestions or ideas.

Dull, stupid, obtuse.

Of, or pertaining to, apathy; insensible to suffering or emotion generally; unemotional; indifferent to what is calculated to move the feelings or…

figurative. Dull, not delicate or sensitive. Obsolete.

Having no sense of taste or appetite.

Not responsive; that does not or cannot respond to an action, touch, etc.

Not readily liable to impressions; = insusceptible, adj. c.

whose blood is unstirred by passion or emotion.

(un-, prefix1 affix 2.)

Of an emotion, a concept, etc.: that is impossible to apprehend or get in touch with. Also with to.

Inclined to hebetude; dull, obtuse.

(un-, prefix1 affix 1.)

Destitute of, or wanting in, mental or moral sensitiveness; having no quickness of feeling; not susceptible of impression. Const. to.

= apathetic, adj.

Not sensitive, insensitive.

Not receptive; incapable of receiving; unreceptive.

Unreceptive, unreceiving.

(un-, prefix1 affix 1b.)

fig. Unfeeling, unemotional. rare.

Devoid of mental feeling; indifferent. rare.

In comparisons, as hard (also tough, sharp) as nails.

(un-, prefix1 affix 1.)

deaf to the tones of music; also transferred and figurative, insensitive, lacking in perception.

(un-, prefix1 affix 1b.)

That knows many facts, interested (only) in facts.

In general use as a modifier, esp. in sense 2b.

Made of pegamoid. Also figurative: impassive, impervious, not susceptible to emotion.