As the usage rules of colon states, you can use it to explain something further, like adding details or a list.
Can I use colon to add "reason" by replacing "because" in a sentence?
For ex,
He is a cheat: he lied about the trip
That's just a simple example I can think of. I would like to know if colon can be used this way.
Yes, a colon can be used at the end of a complete statement (an independent clause, a fully formed thought) to introduce a summary, a restatement, an elaboration, or an explanation of what was presented in the preceding independent clause.
Examples:
Michael studied hard for one purpose: to pass his examinations.
Though my mother disagrees, I stand by my opinion: we cannot afford to buy a new car.
I know the best way to quench one’s thirst: beer.
Yes, a colon can separate two clauses with the second being an explanatory statement.
"Little Red Riding Hood lied: wolves don't eat grandmothers; they eat elk, bison, and deer."—The Art of Styling Sentences by Marie L. Waddell
