Something is sold if someone has bought it. When houses are sold, they usually put a "sold" sign at the front of the house that stays there for some time after the house has been sold.
Spilled, also spelled spilt, is the past tense of spill.
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