呆 vs.长--can be analyzed by structure.
呆字起源于保护婴儿,see illustration above
... both overprotect and no protect will hamper growth.
Dull may opposed to desirous,
| Main Entry: | dull |
| Part of Speech: | adjective |
| Definition: | unintelligent |
| Synonyms: | addled, backward, besotted, boring, brainless, daffy, daft, dense, dim, dim-witted, doltish, dumb, feeble-minded, half-baked, ignorant, imbecilic, indolent, insensate, low, moronic, not bright, numskulled, obtuse, scatterbrained, shallow, simple, simple-minded, slow, sluggish, stolid, stupid, tedious, thick, unintellectual, vacuous, wearisome, witless |
| Antonyms: | intelligent, keen, sharp, smart, witty |
| dull | |
| Part of Speech: | adjective |
| Definition: | insensitive |
| Synonyms: | accustomed, apathetic, blank, boring, callous, colorless, dead, depressed, empty, even, flat, heavy, impassible, inactive, indifferent, inert, insensible, jejune, languid, lifeless, listless, lumpy, monotonous, passionless, placid, prosaic, quiet, regular, routine, slack, slow, sluggish, spiritless, stagnant, still, stolid, torpid, unexciting, unresponsive, unsympathetic, usual, vacuous |
| Antonyms: | lively, quick, sensitive, vivacious |