Flaky

Adjective

 * 1) Consisting of flakes or of small, loose masses; lying, or cleaving off, in flakes or layers; flakelike.
 * 2)  Working only on an intermittent basis; unreliable
 * 3) 🇺🇸 Unreliable; intermittent or eccentric.
 * I cannot enjoy the online game because of my flaky Internet connection.

Thesaurus
abnormal, anomalous, apish, arbitrary, asinine, asperous, balmy, bananas, barmy, bats, batty, beany, befooled, beguiled, besotted, bonkers, brainless, branny, buffoonish, buggy, bughouse, bugs, capricious, chalklike, chalky, cockeyed, comminute, comminuted, crackers, crank, crankish, cranky, crazy, credulous, crotchety, crushed, cuckoo, daffy, daft, dazed, detrital, detrited, deviant, deviative, different, dippy, disintegrated, divergent, dizzy, doting, dotty, dumb, dusty, eccentric, efflorescent, erratic, exceptional, fanciful, fantasied, fantastic, farinaceous, fatuitous, fatuous, fey, fine, flipped, flocculent, floury, fond, fool, foolheaded, foolish, freaked-out, freakish, fruitcakey, fruity, fuddled, funny, furfuraceous, futile, gaga, gone to dust, goofy, grated, ground, gulled, harebrained, haywire, humorsome, idiocratic, idiosyncratic, idiotic, imbecile, impalpable, inane, inept, infatuated, insane, irregular, just plain nuts, kinky, kooky, lentiginous, lepidote, levigated, loony, loopy, mad, maggoty, maudlin, mealy, milled, moody, moronic, motiveless, notional, nuts, nutty, odd, oddball, off the hinges, off the track, off the wall, peculiar, pestled, petulant, potty, powdered, powdery, pulverant, pulverized, pulverulent, queer, quirky, reduced to powder, round the bend, sappy, scabby, scabious, scabrous, scaly, scobicular, scobiform, screwball, screwballs, screwy, scurfy, senseless, sentimental, sharded, shredded, silly, singular, slaphappy, squamous, strange, stupid, temperamental, thoughtless, triturated, twisted, unconventional, unnatural, unreasonable, unrestrained, vagarious, vagrant, wacky, wanton, wayward, wet, whimsical, witless

Etymology
flake: + -y:

Alternative forms

 * flakey

Translations

 * German:


 * German: