Meager
Inadequate is an example.
Useless is another word for ineffective. Additional synonyms include inadequate, powerless, futile and unproductive.
Target as in target quantity
Ambo
Insufficient, inadequate, sketchy, poor, lacking, or incomplete. Those words mean adequate.
Inadequate is an example.
Quantity AND QUARTZ
Did you mean insufficient? If so: Not enough, inadequate.
short - They were short on experience.
Useless is another word for ineffective. Additional synonyms include inadequate, powerless, futile and unproductive.
dosage, quantity
Another word starting with g is gloominess
Bulk
Target as in target quantity
His grades were inadequate. The food provided inadequate nourishment. Money was inadequate to finance the venture.
The word solubility is inadequate here; gases form mixtures.
An abundary is another word for an abundance, an overflowing quantity of something.