Glad; pleased; rejoiced: used absolutely or followed by an infinitive: as, I am fain to see you.Glad, in a relative sense; content or willing to accept an alternative to something better but unattainable: followed by an infinitive: as, he was fain to run away.Gladly; with pleasure or content: with would.To be fain; be glad; rejoice.To fawn. See fawn, verbTo fill with gladness; cause to rejoice.To wish; desire; long.To acquiesce in; accept with reluctance, as an alternative.An obsolete spelling of feign (retained in the derivative faint).