Tough, Experienced, E.g. __ Criminals
This page is the CodyCross answer for the clue below from Prehistory, Group 1257, Puzzle 1 (Climate Change).
Question is: Tough, Experienced, E.g. __ Criminals
and the answer is: HARDENED
Word Meaning:
HARDENED — simple past and past participle of harden
Definitions from Wiktionary.