Answer:

littered

Answer	Crossword Clue
LITTERED	Caused a roadside eyesore
LITTERED	Left a mess behind
LITTERED	Untidy.

LITTERED	Strewed trash
LITTERED	In disarray
LITTERED	Dropped trash on the street
LITTERED	Gave birth to whelps
LITTERED	Strewn
LITTERED	Ignored a trash can
LITTERED	Scattered refuse
LITTERED	Didn't use the can?

Crossword

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