insufficient
US /ˌɪn.səˈfɪʃ.ənt/
UK /ˌɪn.səˈfɪʃ.ənt/

1.
insuficiente, inadequado
not enough; inadequate
:
•
There was insufficient evidence to convict him.
Havia provas insuficientes para condená-lo.
•
The food supply was insufficient for the growing population.
O suprimento de alimentos era insuficiente para a população crescente.