pros Definition

pro¹
prep

1. In favour of something.

noun

pros
1. A reason, argument or choice in favour of something. See also pros and cons.

adverb

1. colloq
In favour. Compare anti.
Example: thought he would argue pro

Etymology: 15c: Latin, meaning ‘for' or ‘on behalf of'.

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pro²
noun pros

colloq:
1. A professional.
2. A prostitute.

Etymology: 19c abbreviation.