Not sturdy (6)
I believe the answer is:
flimsy
(Other definitions for flimsy that I've seen before include "Not strong" , "Lacking strength and solidity" , "Weak, insubstantial" , "Fragile, of loose structure" , "Fragile; weak" .)
I believe the answer is:
flimsy
(Other definitions for flimsy that I've seen before include "Not strong" , "Lacking strength and solidity" , "Weak, insubstantial" , "Fragile, of loose structure" , "Fragile; weak" .)