Here are the possible solutions for first things clue
Answer
Clue
Relevancy
sort
Clue
Put first things first
sorts
Clue
Puts first things first
Puts first things first, e.g.
fun
Clue
First word across in the first-ever crossword (1913) and the first of a dozen appearances of the word in this puzzle's grid, written word search-style (left, right, down, and diagonally) ... Can you f
Definition
to act playfully
catalog
Clue
Place to find things you like and things you don't
Definition
to classify information descriptively
corrosives
Clue
Things that eat away at things
Definition
CORROSIVE, a corrosive substance
envied
Clue
"Man will do many things to get himself loved, he will do all things to get himself ___": Mark Twain
Definition
ENVY, to covet others' possessions, looks etc.
fiveandten
Clue
A place to buy things (and a hint to finding another place to buy things)