s

naughtiness; mood; fickleness; freak; oddities; waywardness; whimsicality; tantrum (That child is always throwing tantrums)

desaprob.

whims (I do most of my downloading on the huge gigabit corporate pipe I have at work that isn’t subject to the whims of the local ISP’s. ART Vancouver)

makár.

grizzle; moods

каприз s

gen.

folly; whim (a sudden desire or change of mind • I am tired of that child's whims); caprice (an especially unreasonable sudden change of mind etc.; a whim • I'm tired of the old man and his caprices); freak; fantasy; vagary (MichaelBurov); wantonness; whigmaleerie; crank; fit; phantasy; whimsey; whimsy; naughtiness (о детях); spirt; spurt; start; tiff; turn; whimwham; fancy (a sudden (often unexpected) liking or desire • The child had many peculiar fancies)

Gruzovik

oddity

amer.

fad (I just wanted to work, and thought it was a fad that would go away. Val_Ships); kink (сленг MichaelBurov)

antic.

megrim; tift

educ.

doggedness; obstinacy; stubbornness