1. (

• necessity ,
• essential ,
• requirement ,
• requisite ,
• necessary

) anything indispensable; "food and shelter are necessities of life"; "the essentials of the good life"; "allow farmers to buy their requirements under favorable conditions"; "a place where the requisites of water fuel and fodder can be obtained" ;

1. (

• necessary

) absolutely essential ;

2. (

• necessary

) unavoidably determined by prior circumstances; "the necessary consequences of one's actions" ;