that

Introducing a reason: in that; because.

Introducing an object or final end or purpose: equivalent to the phrases in order that, for the purpose that, to the effect that.

Introducing a result or consequence.

Introducing a clause as the subject or object of the principal verb, or as a necessary complement to a statement made.

Seeing; since; inasmuch as.

Formerly often used after a preposition, introducing a noun-clause as the object of the preposition: as, before that he came, after that they had gone, etc., where at present the that is omitted and the preposition has become a conjunction; also, by mistaken analogy with such cases, that was occasionally added after real conjunctions, as when that, where that.

Sometimes used in place of another conjunction, in repetition.

Used elliptically to introduce a sentence or clause expressive of surprise, indignation, or some kindred emotion.

Used as an optative particle, or to introduce a phrase expressing a wish: would that: usually with O!

Used as a definitive adjective before a noun, in various senses.