Answer:

underlie

Answer	Crossword Clue
UNDERLIE	Account for
UNDERLIE	Be situated beneath
UNDERLIE	Form the base of

UNDERLIE	Support
UNDERLIE	Be the basis of
UNDERLIE	Form the basis of
UNDERLIE	Be at the base of.
UNDERLIE	Serve as the basis for

Crossword

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