Falsehood or deceit; pride. Vain and vanity can also mean empty or without value.

He who has not lifted up his soul unto vanity will stand in the Lord’s holy place, Ps. 24: 3-4. When ye pray, use not vain repetitions, Matt. 6: 7. The large and spacious building is vain imaginations and pride, 1 Ne. 12: 18. Will ye persist in setting your hearts upon the vain things of the world? Alma 5: 53. Seek not after the vain things of this world, for you cannot carry them with you, Alma 39: 14. Vanity and unbelief have brought the Church under condemnation, D&C 84: 54-55. When we try to gratify our vain ambition, the heavens withdraw, D&C 121: 37.