Dirty xmas one liners. Dirty, filthy, foul, squalid refer to that which is not clean. DIRTY meaning: 1. , or containing something such as pollution or bacteria: 2. Mar 2, 2026 · Don't put that in your mouth, dear. Appearing as if soiled; dark-colored; impure; dingy. DIRTY definition: soiled with dirt; foul; unclean. dirty emphasizes the presence of dirt more than an emotional reaction to it. marked with dirt, mud, etc. dirty, filthy, foul, nasty, squalid mean conspicuously unclean or impure. It can refer to physical objects, surfaces, or environments that are stained, soiled, or not hygienic.