Definitions:

1. Describes something or someone lacking ears or having no external ears. ADJECTIVE
   • The earless lizard relies on other senses, such as vibration detection, to navigate its environment.
2. Figurately, can describe someone who appears not to listen or pay attention. ADJECTIVE
   • He seemed earless to the advice given by his colleagues, continuing on his chosen path regardless of their warnings.
3. In biology, describes animals that naturally do not have visible external ears, often because they have adapted to environments where external ears are not advantageous. ADJECTIVE
   • Earless seals have streamlined bodies that help them swim more efficiently in the water.

Synonyms:

• earless frog
• earless lizard
• earless seal
• inattentive
• no ears
• unheeding
• without hearing