/ wɪlt; NAmE / verb
1.
[ v , vn ] if a plant or flower wilts , or sth wilts it, it bends towards the ground because of the heat or a lack of water
SYN droop
2.
[ v ] ( informal ) to become weak or tired or less confident
SYN flag :
The spectators were wilting visibly in the hot sun.
He was wilting under the pressure of work.
3.
thou wilt ( old use ) used to mean 'you will', when talking to one person
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WORD ORIGIN
senses 1 to 2 late 17th cent. (originally dialect): perhaps an alteration of dialect welk lose freshness , of Low German origin.