(idiomatic, with "the") The unchangeable nature of something.

plural of stag night

A party held for a woman who is about to be married, normally attended only by female friends and relatives.

plural of hen night

plural of non-disclosure agreement

plural of number cruncher

Alternative spelling of number cruncher

An accountant or other person who deals with the calculation of numbers as a profession. / (computing) A program, algorithm, or hardware with a focus on numerical calculation.

plural of number-cruncher (alternative spelling of number cruncher).

plural of new lad