Noah Webster's Dictionary (n.) The quality of being impatient; want of endurance of pain, suffering, opposition, or delay; eagerness for change, or for something expected; restlessness; chafing of spirit; fretfulness; passion; as, the impatience of a child or an invalid.

Multi-Version Concordance Impatience (1 Occurrence) Exodus 6:9 And Moses spake so unto the children of Israel: but they hearkened not unto Moses for anguish of spirit, and for cruel bondage. (See JPS)