Eyed is the past tense of eye, but it means you were looking at someone or something. For example, "He eyed off the cakes on the counter".
Flew is the past tense of fly. For example, "a bird flew past my window".
Words that are a past tense of other words.
Abused, Allowed, Asked, Been, Began, Billed, Blew, Bothered, Bought, Brought, Caused, Ceased, Chased, Chose, Chucked, Confused, Crowned, Decayed, Deferred, Did, Dispersed, Displayed, Done, Drawn, Drove (drive), Ducked, Enjoyed, Feared, Forced, Grew, Guessed, Happened, Heard, Jeered, Joined, Juiced, Kept, Knew, Learnt, Limited, Mapped, Mused, Napped, Neared, Oozed, Packed, Quipped, Rapped, Remained, Sank, Sapped, Shaken, Shipped, Shone, Shook, Sinned, Skun, Slain, Slapped, Sourced, Spoke (past), Spurned, Stopped, Strode, Supped, Swore, Swum, Taken, Taught, Tipped, Used, Veered, Was, Went, Would, Yearned, Zapped