Being or amounting to a single unit or individual or entire thing, item, or object rather than two or more; a single
He has to much confidence in his abilities despite the fact that he hasn't fully escaped from the cyclops.
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Large is an Adjective
Fish is a Noun
Swim is a Verb
Swiftly is an Adverb
In is a preposition
The is a determiner
Sea is a noun.
I hope this helps since you didn't say which word is italicized.
