The crossword solutions for the term UNABLE TO CONTINUE are 'STUCK' (5 letters) and 'DONE' (4 letters). The term UNABLE TO CONTINUE is often used to describe a situation in which someone is unable to continue with a task or activity due to an obstacle or lack of resources. The two words 'STUCK' and 'DONE' can be used to describe this situation, as they both imply that the person is unable to move forward. 'STUCK' implies that the person is STUCK in a certain place or situation, while 'DONE' implies that the person has finished what they were doing and cannot continue any further.