Answer:

tiring

Answer	Crossword Clue
TIRING	Arduous
TIRING	Getting weary
TIRING	Exhaustive

TIRING	Exhausting
TIRING	Tedious.
TIRING	Wearisome
TIRING	Becoming boresome
TIRING	Like laborious work
TIRING	Somewhat weary
TIRING	Boresome
TIRING	Adjective for a trek

TIRING	Strenuous
TIRING	Burdensome
TIRING	Like hard work
TIRING	Fading fast
TIRING	Laborious
TIRING	Enervative
TIRING	Like a good workout

Crossword

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