godan verb (-ku), intransitive verb
get dry; dry out
Intransitive verb: the subject itself becomes dry. Use が for the thing drying, as in 洗濯物が乾く; the transitive counterpart is 乾かす, 'to dry something.'
洗濯物がよく乾いた。
The laundry dried well.
まだペンキが乾いていない。
The paint has not dried yet.
Standard kanji spelling for things losing moisture and becoming dry. Do not confuse with 渇く, also read かわく, meaning to become thirsty or crave something.
A native Japanese verb written with the kanji 乾, which is conventionally associated with dryness. The exact historical derivation of the Japanese verb is not specified.