simple past tense and past participle of stop at nothing

plural of know-nothing

Ignorant; characterized by foolish denial of facts or beliefs in that which is not true.

An ignorant person; one who lacks knowledge.

Alternative form of nothing for it

(Ireland or archaic) Something trivial, of no importance.

Something of little substance or importance.

plural of thing of nothing

(derogatory) Any form of reductionism seen as explaining away phenomena.

plural of nothing-buttery