This is the 278th most frequent French word.
comment
"Comment" means "how" or "what" (in questions).
Here, 'comment' is used as an adverb meaning 'how' to inquire about someone's state.
Comment vas-tu aujourd'hui ?
How are you today?
In this sentence, 'comment' asks about the manner or method of an action.
Je me demande comment il a fait ça.
I wonder how he did that.
Here, 'comment' is used as an exclamatory word to express astonishment or surprise.