compulsions

noun compulsions

• forces — physical power or strength possessed by a living being: He used all his force in opening the window.
• constraints — limitation or restriction.
• duties — something that one is expected or required to do by moral or legal obligation.
• necessities — something necessary or indispensable: food, shelter, and other necessities of life.
• needs — of necessity; necessarily (usually preceded or followed by must): It must needs be so. It needs must be.