Meaning

• A disagreeable mixture or confusion of things; hence, a situation resulting from blundering or from misunderstanding; disorder.

  "He made a mess of it."

• A large quantity or number.

  "My boss dumped a whole mess of projects on my desk today."

• Excrement.

  "Parked under a tree, my car was soon covered in birds' mess."

• A person in a state of (especially emotional) turmoil or disarray; an emotional wreck.

  "Between the pain and the depression, I'm a mess."

Meaning

• (transitive, often used with "up") To make untidy or dirty.

• (transitive, often used with "up") To throw into disorder or to ruin.

• To interfere.

  "This doesn't concern you. Don't mess."

• (used with "with") To screw around with, to bother, to be annoying to.

  "Stop messing with me!"