to submit to; agree to: to abide by the court's decision.
c.
to remain steadfast or faithful to; keep: If you make a promise, abide by it.
Origin: before 1000; Middle English abiden,Old English ābīdan; cognate with Old High German irbītan await, Gothic usbeisns expectation, patience. See a-3, bide
O.E. abidan, gebidan "remain," from ge- completive prefix (denoting onward motion; see a- (1)) + bidan "bide, remain, wait, dwell" (see bide). Originally intransitive (with genitive of the object: we abidon his "we waited for him"); transitive sense
emerged in M.E. Meaning "to put up with" (now usually negative) first recorded 1520s. The historical conjugation is abide, abode, abidden, but the modern formation is now generally weak.