Found in the following dictionaries
Enable (Words with friends)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
SOWPODS (Collins Scrabble Words)
OTCWL2014 (NASPA Word List 2014)
TWL06 (NASPA List 2006)
"If" Definition
noun
A possibility, condition, or stipulation: There will be no ifs, ands, or buts in this matter.
Source: American Heritage Dictionary
A condition or supposition.
Source: Oxford Dictionary
conjunction
Although possibly; even though: It is a handsome if useless trinket.
Source: American Heritage Dictionary
Granting that: If that is true, what should we do?.
Source: American Heritage Dictionary
In the event that: If I were to go, I would be late.
Source: American Heritage Dictionary
On the condition that: She will play the piano only if she is paid.
Source: American Heritage Dictionary
Used to introduce an exclamatory clause, indicating a wish: If they had only come earlier!.
Source: American Heritage Dictionary
residual
Intermediate frequency.
Source: Oxford Dictionary