wacky

(hwăk'ē, wăk'ē)
adj. Slang, -i·er, also -i·er, -i·est, also -i·est.

1. Eccentric or irrational: a wacky person.
2. Crazy; silly: a wacky outfit.

[Variant of whacky, probably from the phrase out of whack. See whack.]

wackily wack'i·ly adv.
wackiness wack'i·ness n.

also whacky

adjective

1. So senseless as to be laughable: absurd, foolish, harebrained, idiotic, imbecilic, insane, lunatic, mad, moronic, nonsensical, preposterous, silly, softheaded, tomfool, unearthly, zany. Informal cockeyed, crazy, loony, loopy. Slang balmy², dippy, dopey, jerky, sappy. See ability/inability, knowledge/ignorance.
2. Afflicted with or exhibiting irrationality and mental unsoundness: brainsick, crazy, daft, demented, disordered, distraught, dotty, insane, lunatic, mad, maniac, maniacal, mentally ill, moonstruck, off, touched, unbalanced, unsound, wrong. Informal bonkers, cracked, daffy, gaga, loony. Slang bananas, batty, buggy, cuckoo, fruity, loco, nuts, nutty, screwy. Chiefly British crackers. Law non compos mentis. Idioms: around the bend, crazy as a loon, mad as a hatter, not all there, nutty as a fruitcake, offout ofone's head, off one's rocker, of unsound mind, out of one's mind, sick in the head, stark raving mad. See sane/insane.

adj

Definition: acting crazy
Antonyms: calm, collected

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Note: click on a word meaning below to see its connections and related words.

The adjective has 2 meanings:

Meaning #1: (informal terms) "gave me a cockamamie reason for not going"
  Synonyms: cockamamie, cockamamy, fool, goofy, sappy, silly, whacky, zany, unreasonable

Meaning #2: informal or slang terms for mentally irregular
  Synonyms: balmy, barmy, bats, batty, bonkers, buggy, cracked, crackers, daft, dotty, fruity, haywire, kooky, kookie, loco, loony, loopy, nuts, nutty, round the bend, around the bend, whacky

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Dansk (Danish)
adj. - skør, sær, tosset

Nederlands (Dutch)
gek, geschift, excentriek

Français (French)
adj. - farfelu

Deutsch (German)
adj. - (Slang) verrückt

Ελληνική (Greek)
adj., -
n. - μουρλός, παλαβός

Italiano (Italian)
stravagante

Português (Portuguese)
adj. - estranho, doido

Русский (Russian)
эксцентричный, дурацкий, ненадежный

Español (Spanish)
adj. - absurdo, loco, excéntrico, piantado, chalado, chiflado

Svenska (Swedish)
adj. - fånig (sl.)
n. - fån (sl.)

中文（简体）(Chinese (Simplified))
古怪的, 疯疯癫癫的, 乖僻的

中文（繁體）(Chinese (Traditional))
adj. - 古怪的, 瘋瘋癲癲的, 乖僻的

한국어 (Korean)
adj. - 괴짜인, 이상한, 괴팍스러운

日本語 (Japanese)
adj. - 気違いじみた

العربيه (Arabic)
‏(صفه) غريب, أراجوز (الاسم) أحمق, أراجوز‏

עברית (Hebrew)
adj. - ‮מטורף, מוזר, אבסורדי, תימהוני, לא יציב‬

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wacky wigglers	over the hedge wacky moments