This compound noun (aischros + logos) means filthy or obscene speech—language that is shameful, degrading, or abusive. Classical usage included both obscenity and verbal abuse. Paul uses it in Colossians 3:8 commanding believers to put away "filthy language from your mouth." The term encompasses crude sexual talk, vulgar humor, and verbally degrading others. It's part of Paul's vice list of things to remove from the new life in Christ—anger, wrath, malice, slander, and obscene talk. The concern is for speech that degrades human dignity, corrupts moral sensibilities, or dishonors God.