I wonder
Definitions
A phrase used to express curiosity or a desire to know something.
A polite way to introduce a request or a tentative suggestion.
Examples
I wonder if it will rain later this afternoon.
I wonder what she is thinking about right now.
I wonder why the store is closed on a Tuesday.
Synonyms
I am curious I ponder I contemplate I speculate I query I muse I question
Antonyms
I know I am certain I am sure I conclude I decide I understand I am convinced