Noah Webster's Dictionary 1. (a.) Apparently valid, likely; probable; credible; as a plausible explanation. 2. (a.) Obtaining approbation; specifically pleasing; apparently right; specious; as, a plausible pretext; plausible manners; a plausible delusion. 3. (a.) Using specious arguments or discourse; as, a plausible speaker.

Multi-Version Concordance Plausible (3 Occurrences) Romans 16:18 For men of that stamp are not bondservants of Christ our Lord, but are slaves to their own appetites; and by their plausible words and their flattery they utterly deceive the minds of the simple. (WEY) 1 Corinthians 2:4 My speech and my preaching were not in persuasive words of human wisdom, but in demonstration of the Spirit and of power, (See RSV) Colossians 2:4 I say this to prevent your being misled by any one's plausible sophistry. (WEY)