Excel FALSE Function

The FALSE function takes no arguments and generates the boolean value FALSE. 

For example, to return FALSE if if the value in A1 < 0, use the formula:

=IF(A1<0, FALSE())

Note that you can also just use enter the word FALSE directly into a cell or formula and Excel will interpret this as the logical value FALSE. For example, these formulas are functionally identical:

=IF(A1<0, FALSE())
=IF(A1<0, FALSE)

Both formulas return FALSE if the value in A1 < 0.

Microsoft labels the FALSE function a "compatibility function", in Excel for compatibility with other spreadsheet applications.