раскиснуть

Verb

 * 1) to become soft/limp
 * 2)  to be slack/loose/flabby/droopy/drooping, to be out of sorts, to feel seedy/weak/spent/wasted, to become maudlin, to lose heart
 * 3)  to become sentimental/tearful/maudlin/mawkish/lachrymose