untidy

UK: /ʌnˈtaɪdi/ US: /ʌnˈtaɪdi/ ,(un tī′dē)

Inflections of 'untidy' (adj):

untidier

adj comparative

untidiest

adj superlative

Inflections of 'untidy' (v): (⇒ conjugate)

untidies

v 3rd person singular

untidying

v pres p

untidied

v past

untidied

v past p

WordReference Random House Learner's Dictionary of American English © 2025

un•ti•dy /ʌnˈtaɪdi/   adj., -di•er, -di•est. 

1. not tidy or neat;
   disordered:
   an untidy children's room.
2. not well-organized or carried out:
   an untidy plan.

WordReference Random House Unabridged Dictionary of American English © 2025

un•ti•dy  (un tī′dē), adj., -di•er, -di•est, v., -died, -dy•ing. 
adj. 

1. not tidy or neat;
   slovenly;
   disordered:
   an untidy room; an untidy person.
2. not well-organized or carried out:
   an untidy plan.

v.t. 

3. to mess up;
   disorder;
   disarrange:
   The guests untidied the room.

• 1175–1225; Middle English; see un-¹, tidy

un•ti′di•ly, adv. 
un•ti′di•ness, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

untidy / ʌnˈtaɪdɪ/ adjective ( -dier, -diest)

1. not neat; slovenly

verb ( -dies, -dying, -died)

1. (transitive) to make untidy

unˈtidily adverb

unˈtidiness noun