| cantankerous(adjective, hard, tough, severe, cold) | |
| carrion | |
| cataleptic | |
| catatonic | |
| caught napping | |
| churlish(adjective, hard, tough, severe, cold) | |
| cold-blooded(adjective, hard, tough, severe, cold) | |
| cold-hearted(adjective, hard, tough, severe, cold) | |
| cold fish(expression, adjective, hard, tough, severe) | |
| compliant(adjective, quiet, flat, indifferent, apathetic) | |
| conked(adjective, unconscious, sleeping, slumbering, snoozing) | |
| cool(adjective, quiet, indifferent, apathetic, lifeless) | |
| croaked | |
| crotchety(adjective, hard, tough, severe, cold) | |
| daydreaming(adjective, unqualified, distracted, absorbed, inattentive) | |
| dead and gone(expression, idiom) | |
| dead to | |
| deaf to | |
| death-struck | |
| deep(adjective, anxious, distant, distracted, absorbed) |
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| APA | Smart Define. (2016). asleep thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/asleep/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "asleep thesaurus" https://smartdefine.org/asleep/thesaurus/synonyms (accessed September 22, 2026). |
| Harvard | Smart Define 2016, asleep thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/asleep/thesaurus/synonyms>. |
| MLA | Smart Define. "asleep thesaurus" 8 February 2016. Web. 22 September 2026. <https://smartdefine.org/asleep/thesaurus/synonyms> |