early 13c., "untimely, unseasonable, unsuitable," from un- (1) "not" + tidy (adj.). Similar formation in West Frisian ontidich, Middle Dutch ontidich, Dutch ontijdig, Old High German unzitich, German unzeitig, Norwegian utidig "untimely, unseasonable, unfavorable." Meaning "poorly cared for, not neat" is recorded from mid-14c.
untidy (v.)
"make untidy," 1891, from untidy (adj.). Related: Untidied; untidying.
an untidy living room
untidy and casual about money
careless and untidy in her personal habits
untethered
unthaw
unthinkable
unthinking
unthrifty
untidy
untie
until
untilled
untimely
untitled
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