Acquiescence

3 A keeping quiet: consent inferred from silence or from failure to object, the person to be charged having knowledge of the essential facts. Tacit encouragement to an act done; assent. Imports mere submission, not approbation; as when it is said tbat the board of trustees of a college acquiesced in legislation affecting tbeir charter.* Implies such knowledge of facts as will enable the party to take effectual action. One may not then rest until the rights of third persons are involved and the situation of the wrong-doer is materially changed.^ Where a person tacitly encourages an act to be done, he cannot afterward exercise his legal right in opposition to such consent, if this encouragement induced the other party to change his position, so that he will be pecuniarily prejudiced by the assertion of silch adversary claim."

See further Affirm, 2; Estoppel; Silence;' Sta IiE; Waiter.