King James Bible Dictionary

IN'FIDEL, adjective [Latin infidelis; in and fidelis; faithful.]

Unbelieving; disbelieving the inspiration of the Scriptures, or the divine institution of christianity.

The infidel writer is a great enemy to society.

IN'FIDEL, noun One who disbelieves the inspiration of the Scriptures, and the divine origin of christianity.

General references
Genesis 3:1; Genesis 3:4; Exodus 5:2; Exodus 14:11-12; Exodus 16:3; Exodus 16:7; Numbers 14:27-34; Numbers 16:41; Numbers 21:5; Exodus 17:7; Numbers 15:30-31; Deuteronomy 29:19-21; Deuteronomy 32:15; 1 Kings 20:28; 1 Kings 22:24; 2 Kings 2:23-24; 2 Chronicles 30:6; 2 Chronicles 30:10; 2 Chronicles 32:15-19; 2 Chronicles 36:16; Job 15:25-26; Job 21:14-15; Job 22:13-14; Job 22:17; Job 34:7; Job 34:9; Job 34:17-19; Job 34:33; Job 35:3; Job 36:23; Psalms 1:1; Psalms 3:2; Psalms 4:6; Psalms 10:11; Psalms 10:13; Psalms 12:3-4; Psalms 14:1; Psalms 14:6; Psalms 53:1; Psalms 42:3; Psalms 50:21; Psalms 59:7; Psalms 64:5; Psalms 73:11; Psalms 78:19-22; Psalms 107:11-12; Psalms 94:7-9; Psalms 106:24-25; Proverbs 1:22; Proverbs 3:34; Proverbs 9:12; Proverbs 14:6; Proverbs 19:29; Proverbs 24:9; Isaiah 3:8; Isaiah 5:18-19; Isaiah 5:24-25; Isaiah 10:15; Isaiah 28:9-10; Isaiah 28:14-15; Isaiah 28:17-22; Isaiah 29:15-16; Isaiah 29:20; Isaiah 45:9-10; Isaiah 47:10-11; Isaiah 57:4-11; Jeremiah 2:31; Jeremiah 5:12; Jeremiah 5:14; Jeremiah 17:15; Jeremiah 43:2; Jeremiah 48:42; Jeremiah 48:26; Jeremiah 50:24; Jeremiah 50:29; Lamentations 1:7; Ezekiel 9:9-10; Ezekiel 8:12; Ezekiel 12:22; Ezekiel 11:3; Ezekiel 18:2; Ezekiel 18:29; Ezekiel 33:17; Ezekiel 20:49; Ezekiel 33:20; Ezekiel 33:30; Ezekiel 36:2; Daniel 3:15; Daniel 8:25; Daniel 8:10; Daniel 7:25; Daniel 11:36-37; Hosea 7:5; Hosea 7:13; Hosea 7:15; Amos 5:18; Amos 7:16-17; Micah 7:10; Zephaniah 1:12; Malachi 1:7; Malachi 3:13-14; Matthew 12:24; Mark 3:22; Luke 11:15; Luke 16:14; Matthew 25:24-27; Matthew 27:39-44; Luke 4:23; Luke 19:14; Luke 19:27; Acts 2:13; Acts 13:45; Acts 17:18; Acts 17:32; Acts 23:8; Matthew 22:23; Romans 9:20-21; Romans 3:5; Hebrews 10:29; 2 Peter 2:1; 2 Peter 3:3-5; Jude 1:4; Jude 1:15; Jude 1:18-19
Presumption; Skepticism; Unbelief

INFIDEL'ITY, noun [Latin infidelitas.]

1. In general, want of faith or belief; a withholding of credit.

2. Disbelief of the inspiration of the Scriptures, or the divine original of christianity; unbelief.

There is no doubt that vanity is one principal cause of infidelity

3. Unfaithfulness, particularly in married persons; a violation of the marriage covenant by adultery or lewdness.

4. Breach of trust; treachery; deceit; as the infidelity of a friend or a servant. In this sense, unfaithfulness is most used.