Usually means: Eccentric, bizarre behavior or madness.
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We found 7 dictionaries that define the word looniness:

General (7 matching dictionaries)
  1. looniness: Merriam-Webster
  2. looniness: Oxford Learner's Dictionaries
  3. looniness: Collins English Dictionary
  4. looniness: Wordnik
  5. looniness: Wiktionary
  6. looniness: Dictionary.com
  7. looniness: TheFreeDictionary.com

(Note: See loony as well.)

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Definitions from Wiktionary (looniness)

▸ noun:  The state or condition of being loony; craziness, lunacy.

Similar:
loopiness, lunacy, lockiness, zaniness, craziness, crazedness, lankiness, lanosity, lousiness, insanity, more...

Opposite:
sanity, rationality, soundness

Types:
craziness, insanity, madness, lunacy, derangement, more...

▸ Words similar to looniness

▸ Usage examples for looniness

▸ Idioms related to looniness

▸ Wikipedia articles (New!)

▸ Popular adjectives describing looniness

▸ Words that often appear near looniness

▸ Rhymes of looniness

▸ Invented words related to looniness

Similar:
loopiness, lunacy, lockiness, zaniness, craziness, crazedness, lankiness, lanosity, lousiness, insanity, more...

Opposite:
sanity, rationality, soundness

Types:
craziness, insanity, madness, lunacy, derangement, more...



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