Amuse:
Cause (someone) to find something funny; entertain.
It is a verb, so use it as a verb in a sentence like so:
He was amused by the juggler on the side of the street.
The dancing clown was amusing to the little boy.
Amused means entertained or finding something funny. An example of amused used in a sentence is: I was amused to find out that she wore the exact same shirt as me today, without either of us planning it.
joker amused me and him. We were not amused by the movie.
I was amused by the way she looked.
A muse amused us with music.
unamused
She was rather amused by his outlandish choice of coupling lederhosen with pennyloafers.
Some might be amused by the nature of this question, but it is a legitimate one. When the cat put his nose up more closely, the lizard was not amused. The student was amused by the professor's clumsiness in the lab.
This justifies the use of this word, in a sentence.
No, the word 'amused' is not a noun at all. The word 'amused' is the past participle, past tense of the verb to amuse. The past participle of the verb also functions as an adjective: an amused audience, amused readers.The noun forms for the verb to amuse are amusement and the gerund, amusing.
Example sentence - We used a stick to prop the fence up while we repaired it.
The word "ingenuous" would be used in a sentence like the word primitive. A example would be: "He told the truth because he was ingenuous." It can be also used for the phrase "ingenuous question".
You do not have to put a comma after the word nevertheless whether you are using it as an adverb or in conjuction. The examples are: "while we disliked each other, nevertheless we agreed". When used as conjuction, "Emma wished he would be less pointed, nevertheless could not help being amused".