inadequate
adjective/i.nɐ.dɨ.kwɐ.du/high
i·na·de·qua·do
Definition
Not adequate, insufficient, or unsuitable for a particular purpose or requirement.
The resources proved inadequate for the project.
His explanation was deemed inadequate by the committee.
Common collocations
inadequate resourcesinadequate preparationinadequate responseinadequate facilities
Etymology
Do latim 'inadequatus', de 'in-' (não) + 'adequatus' (adequado).