Synonyms of the word

heretofore

• adv. (formal) Prior to now, until now, up to the present time; from the origin to this point.

hitherto

• adv. (formal or law) Up to this or that time.

yet

• v. (dialectal) To melt; found; cast, as metal.
• n. (dialectal) A metal pan or boiler; yetling.
• adv. (usually with negative) Thus far; up to the present; up to some specified time.
• adv. Continuously up to the current time; still.
• adv. At some future time; eventually.
• adv. (after certain copulative verbs, followed by an infinitive) Not as of the time referenced.
• adv. In addition.
• adv. (degree) Even.
• conj. Nevertheless; however; but; despite that.