wacky also whacky
adjective
1. Slang. 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: balmy, dippy, dopey, jerky, sappy.
2. Slang. 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, off one’s head, off one’s rocker, of unsound mind, out of one’s mind, sick in the head, stark raving mad.
https://www.thefreedictionary.com/wacky
Wacky = “mad as a hatter”.
Could it be that the President is right, again ?