flare, v. flicker, [flutter]; [dazzle], [blaze], [glare]; flaunt.

flare, n. [glare], flicker.

flare-up, n. (Colloq.) [passion], [anger], [outburst].

flash, n. [gleam], [glare], coruscation.

flash, v. [glitter], [gleam], [glisten], coruscate, [sparkle].

flash, n. instant, [moment].

flashy, a. [dazzling], coruscant; [gaudy], [tawdry], meretricious [showy].

flask, n. betty, matrass, bolthead.

flat, a. [level], [even], plane, [smooth]; prostrate, prone; [stale], insipid, [vapid], [tasteless], [unsavory], unpalatable, [mawkish]; peremptory, [unqualified], [positive]; spatulous, spatulate; sonant, vocal. Antonyms: [convex], [concave], [warped], cambered, undulating, protuberant, projecting.

flat, n. lowland, champaign; [floor], [suite].