• NEED

1. s. necessitas: necessitudo: opus, usus [SYN. and PHR. in NECESSITY]: desiderium (with desire): to feel the need of a thing, aliqua re or alicujus rei indigere (to have need of): aliquid desiderare (to be unwilling to be without).

2.

• v. TRANS., To be in want of, egere aliqua re, more rarely alicujus rei (to have need of anything, be in want of it): indigere aliqua re or alicujus rei (to feel the need or want of anything): opus or usus est aliqua re (there is neuter of a thing, circumstances make a thing necessary. ☞ For this only Col., 9, 2, 1, has opus habeo aliqua re): desiderare aliquid (to desire anything absent, to be unwilling to be without it): requirere aliquid (to find a thing requisite or necessary): not to need anything, to be able to do without it, aliqua re carere, facile supersedere posse.
• INTRANS., to have occasion to, is usually rendered in Latin by est, quod; opposed to non est, cur; nihil est, nihil habeo, quod, followed by a subjunctive; e.g., you need not fear, nihil est, quod extimescas; nihil habes, quod timeas: they need not diminish their hope, non est, cur spes eorum infringatur.