I'll wager that Johnson knows something about all this.
More Examples
Used in the Middle of Sentence
I'll wager that Johnson knows something about all this.
Carelessly wagering his allowance led him to ruin. ( gerund )
Certain wagering individuals would profit from the outcome. ( adjectival )
Meaning of wager for the defined word.
Grammatically, this word "wager" is a noun, more specifically, a countable noun and an agent noun. It's also a verb, more specifically, an intransitive verb and a transitive verb.