어리다

Etymology 1
Originally meant only "to be foolish"; the "to be young" sense developed in the sixteenth century, because children are foolish and immature, and eventually became the main sense of the word. It partly displaced the original word for "to be young",, which now specifically means "to be youthful", i.e. people in their teens and twenties. The "to be foolish" sense was largely replaced by, originally a derived term.

Adjective

 * 1) to be young, to be little, to be a child;
 * 2) to be naïve; to be immature
 * 3)  to be ignorant; to be foolish
 * 1) to be naïve; to be immature
 * 2)  to be ignorant; to be foolish
 * 1)  to be ignorant; to be foolish
 * 1)  to be ignorant; to be foolish
 * 1)  to be ignorant; to be foolish

Etymology 2
, although this is probably a related term instead of a direct ancestor given the incompatible initial vowel.

Verb

 * 1)  to appear faintly
 * 2)  to appear faintly; to be tinged with
 * 3)  to come to the eyes
 * 4)  to fog; to congeal, making things faint to see
 * 1)  to come to the eyes
 * 2)  to fog; to congeal, making things faint to see
 * 1)  to come to the eyes
 * 2)  to fog; to congeal, making things faint to see
 * 1)  to come to the eyes
 * 2)  to fog; to congeal, making things faint to see
 * 1)  to fog; to congeal, making things faint to see