(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.

(chiefly US) open to people of all ages, particularly to children under the age of 18 (of an entertainment event, particularly music or dance)

As an absolute imperative; sparing no effort or expense

plural of all-in

(chiefly Southern US, colloquial) Possessive of all y'all (standing in for all your).

plural of all in