Short for needs must when the devil drives.

Alternative form of must needs.

plural of need-to-know

(idiomatic) Needs for special care, services or accommodations for disabilities.

plural of need-not

With respect to financial or other assistance, derived from need rather than earned by merit.

(dated) A pleonastic intensification of must using the adverb needs, meaning “must necessarily”.

(of the giving of information) remaining secret or hidden until it is needed to be known (by a particular party).

Indicates that the speaker needs a person to guide him or her. / Indicates that the speaker needs a book or document to guide him or her.

plural of number needed to harm