Because etymology

English

English word because comes from Middle English by (Be.), Middle English cause (Cause.)

Etymology of because

Detailed word origin of because

Dictionary entry Language Definition
by Middle English (enm) Be.
cause Middle English (enm) Cause.
bi cause Middle English (enm)
because English (en) (uncommon, slang, especially, Internet) On account of, because of. [since at least the 20th century] (obsolete) So that, in order that. [15th-17th c.]. As is known, inferred, or determined from the fact that.. By or for the cause that; on this account that; for the reason that. (archaic) For the reason (that).. On account (of), for sake (of).. Used alone to refuse to provide a full answer a [...]

Words with the same origin as because

Descendants of cause

cuz