What are the best answers for “having a large brain.”?

macrencephalic, macrencephalous.

How many letters does the top answer for “having a large brain.” have?

The most common answer is macrencephalic (14 letters).

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

macrencephalic 14 letters web-def

Having a large brain.

macrencephalous 15 letters web-def

Having a large brain.

having an exceptionally large head and brain 60% similar → macrocephalic, macrocephalous

having a large belly 50% similar → paunchy, potbellied

having a large face. 50% similar → bullfaced

having a small brain. 50% similar → micrencephalous