Need
Require
Synonyms Require, stand in need of, want, be crying out for, demand, necessitate, involve, lack, be short of, necessary, wanted, lacking, essential, compulsory, mandatory, be in need of, have need of, be in want of, be desperate for, call for, entail, have occasion for/to, be without, miss, required, desired, called for, requisite, and obligatory.
Have to
Synonyms Have to, be obliged to, be under a compulsion to, be under an obligation to, be compelled to, and have need to.
Necessity
Synonyms Necessity, requirement, demand, obligation, call, and exigency.
Essential
Synonyms Requirement, necessity, requisite, wish, desideratum, essential, want, prerequisite, and demand.
Neediness
Synonyms Neediness, poverty, privation, penury, indigence, difficulty, distress, emergency, extremity, exigency, requiring help, disadvantaged, in want, badly off, impoverished, destitute, impecunious, on the breadline, want, deprivation, hardship, destitution, impecuniousness, trouble, crisis, urgency, dire/desperate straits, needy, deprived, underprivileged, poor, unable to make ends meet, poverty-stricken, penurious, indigent, and necessitous.
Example Sentences
You need to rest after the workout.
I need a break from studying.
He doesn’t need any assistance today.
We need to leave before it gets dark.
They need to fix the broken chair.