Yes, con is a Scrabble word!
...and is worth 5 points in Scrabble, and 7 points in Words with Friends
con
Adverb
1. In opposition to a proposition, opinion, etc.
Verb
1. Deprive of by deceit
2. Commit to memory; learn by heart
Noun
1. An argument opposed to a proposal
2. A person serving a sentence in a jail or prison
3. A swindle in which you cheat at gambling or persuade a person to buy worthless property
What Scrabble words can I make with the letters in con?
2 Letter Words