/ ˈwɒntɪŋ; NAmE ˈwɑːn-; ˈwɔːn-/ adjective [ not before noun ] wanting (in sth) ( formal )
1.
not having enough of sth
SYN lacking :
The students were certainly not wanting in enthusiasm.
2.
not good enough :
This explanation is wanting in many respects.
The new system was tried and found wanting .