plural of all-nighter

(chiefly UK, Ireland) Someone who obnoxiously claims to be knowledgeable on a subject.

That consumes everything; that uses everything up. / Totally engrossing, using up all of one's time and energy.

(idiomatic) Ruined; bankrupt. / (idiomatic) completely, to the point of destruction.

Very, extremely; excessively (but lamentably).

(sequence, idiomatic) Firstly; before anything else.

Despite the preceding.

even less

(idiomatic) The entire set of persons or things within a given domain, considered both as separate individuals and collectively.

(academics) A status of a doctoral student who has completed all PhD degree requirements except the doctoral dissertation.