1. I blew out the candles on the birthday cake.

2. I blew out the candle lights on the birthday cake.
3. I blew out the candlelights on the birthday cake.
[Which expression is grammatical? Can we use all of them? Which one is commonly used?]

1 answer

Only #1 is used.

2 is redundant, and 3 is a misuse of "candlelight." Here's how to use "candlelight."

The memorial service was held in candlelight.
The candlelight service for Joe's mother was lovely.