(informal, chiefly US) A situation or object in a state of extreme disarray. / (informal, chiefly US) A disheveled or unbalanced person, particularly one who is nevertheless, or therefore, attractive.

(US) A military dining room or building on an army or marine base.

(transitive) To make a mess of; to untidy, disorder, soil, or muss. / (transitive) To cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin.

present participle of mess around

plural of mess-up

(informal) A mistake or fiasco; something that has gone wrong.

simple past tense and past participle of mess up

In disorder. / (colloquial) Intoxicated, drunk. / (colloquial) Morally reprehensible; clearly and grossly objectionable. / (colloquial) Damaged.

plural of mess tent

simple past tense and past participle of mess around