The practice of going house to house on Halloween evening to receive treats.

present participle of trick-or-treat

(idiomatic) Or something else; allows for the existence of an unexpressed alternative to what was said.

Resulting in either success or failure.

(logic, philosophy) A supposed paradox concerning whether chickens or chicken eggs existed first. / (logic, philosophy) A question to decide which of two interdependent things happened first.

Relating to the practice of forcing employees not promoted in a timely fashion to terminate employment.

The practice of forcing employees not promoted in a timely fashion to terminate employment.

Alternative spelling of true or false

(idiomatic) Highly adverse circumstances; acts of God.

No matter what the adverse circumstances.