feeble (adj)

The boy was too feeble to carry the object very far.
The old man spoke in a feeble voice, barely audible to those around him.
Her attempts to lift the heavy box were feeble, and she quickly asked for help.
The plant showed feeble growth due to lack of sunlight and proper care.
Despite his feeble excuses, it was clear that he had not completed the assignment.