weak at the knees
weak
wi:k
vik
at
æt
āt
the
ðə
dhē
knees
ni:z
niz

Definition & Meaning of "weak at the knees"in English

weak at the knees
01

incapable of making any logical decision or taking any action due to being overwhelmed by a strong desire or feeling 

Examples
The shock of the announcement make me go weak at the knees. 
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