Answer:

greenest

Answer	Crossword Clue
GREENEST	Least experienced
GREENEST	Most verdant
GREENEST	Most verdant.

GREENEST	Most gullible.
GREENEST	Most untrained.
GREENEST	Most unsophisticated.
GREENEST	Most inexperienced.
GREENEST	Least ripe

Crossword

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