flaky

• flakey

flake +‎ -y (“having the quality of”)

• IPA^(key): /ˈfleɪkiː/

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• Rhymes: -eɪki

flaky (comparative flakier, superlative flakiest)

1. Consisting of flakes or of small, loose masses; lying, or cleaving off, in flakes or layers; flakelike.
2. (informal, of a person) Unreliable; prone to make plans with others but then abandon those plans.
3. (informal, of a thing) Unreliable; working only on an intermittent basis; prone to cease functioning properly.
   • 2011 September 16, Ben Dirs, “Rugby World Cup 2011: New Zealand 83-7 Japan”, in BBC Sport‎:

     Toeava went over unopposed to stretch his side's lead but Japan got on the scoreboard on 56 minutes, wing Hirotoki Onozawa intercepting an attempted offload from Slade, who had a rather flaky game, and running in from the All Blacks' 10m line.

   I cannot enjoy the online game because of my flaky Internet connection.

• flakily