mortal

Concise Oxford English Dictionary © 2008 Oxford University Press:
mortal/ˈmɔːtl/

▶adjective

• 1 (of a living creature) subject to death.

• 2 causing or liable to cause death; fatal.

  ■ (of conflict or an enemy) admitting no reconciliation.

• 3 (of a feeling, especially fear) very intense.

• 4 informal conceivable or imaginable: every mortal thing.

  ■ very great: a mortal hurry.

• 5 Christian Theology denoting a grave sin that is regarded as depriving the soul of divine grace. Often contrasted with venial.

▶noun

• 1 a mortal being.

• 2 humorous a person contrasted with those of higher status or ability.

– derivatives
mortally adverb.

– origin ME: from OFr., or from L. mortalis, from mors, mort- ‘death’.