Через переводчик гугла перевел слово "умный".
Получилось: clever, smart, intelligent, shrewd, brainy, capable, cute,
knowledgeable, sagacious, strong-minded, sharp-witted, fly.
Всего 12 синонимов.

И перевел слово "глупый"
Получилось: stupid, silly, foolish, fool, dumb, dull, witless, inane,
brainless, unwise, daft, mindless, goofy, daffy, imbecile, dilly, asinine,
blockish, fatuous, senseless, cloddish, absurd, sappy, anserine,
idle-headed, thick, inept, oafish, birdbrained, apish, balmy, beef-witted,
numskulled, simple-minded, mutton-headed, headless, harebrained,
fat-witted, thick-skulled, Judy, nonsensical, goosey, bovine, fat,
woodenheaded, doddery, footless, nitwitted, spoony, thoughtless,
bird-witted, wet, featherbrained, featherbrain, dense, fatuitous,
doddering, slipslop, barmy, obtuse, softheaded, featherheaded,
feather-pated, goosy, thick-witted, calvish, spooney, gormless,
timber-headed, gaga.
Всего 70.

Ха-ха.