A noun.
"Mon" is the root of the word premonition.
That is the correct spelling of "premonition" (foreboding).
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
I had a premonition that I would answer this question. (Tell your teacher you DID use "premonition" in a sentence in your original question).
a forewarning.
The part of speech for the word diplomacy is a noun.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word "boulevard" is a noun.
The part of speech for the word civilian is English grammar.
The word speech is a noun.
Premonition may be the word you want. Perhaps inkling or suspicion.