I. ˈprō noun
( plural pros )
Etymology: Middle English, from Latin, preposition, for — more at for
Date: 15th century
1. : an argument or evidence in affirmation
an appraisal of the pro s and cons
2. : the affirmative side or one holding it
II. adverb
Etymology: pro-
Date: 15th century
: on the affirmative side : in affirmation
much has been written pro and con
III. preposition
Etymology: Latin
Date: 1817
: in favor of : for
IV. noun or adjective
Date: 1866
: professional