Kitty sleeps peacefully.
Meaning: This means that the kitty is resting in a calm and quiet manner without any disturbances. It's like saying, The little cat is sleeping soundly and without any worries.
Choice of Words: Kitty is a common term for a young cat, and here it's used as the subject of the sentence. Sleeps is the third person singular form of the verb 'sleep', and it indicates the action of resting in a state of reduced consciousness. Peacefully is an adverb that describes the manner in which the action is performed, in this case, without disturbance or worry.
Alternative Expressions
Related Expressions