Answer:

wariest

Answer	Crossword Clue
WARIEST	Least trustful
WARIEST	Most cagey.
WARIEST	Most cautious.

WARIEST	Least gullible.
WARIEST	Most cautious
WARIEST	Most chary
WARIEST	Least trusting
WARIEST	Least confident

Crossword

a puzzle consisting of a grid of squares and blanks into which words crossing vertically and horizontally are written according to clues.