Rap That Wasn't Thought Out in Advance
This page is the CodyCross answer for the clue below from Architectural Styles, Group 1167, Puzzle 5 (Stained Glass).
Question is: Rap That Wasn't Thought Out in Advance
and the answer is: FREESTYLE
Word Meaning:
FREESTYLE — (sports) A sports event where competitors can choose their own method of participation.
Definitions from Wiktionary.