"The war was lost, thanks to the treachery of the traitor." Treachery is a noun, so it is best to use it as a direct subject. You could also use it interjectively.
You can use treachery in a sentence by saying, The girls were best of friends and one of them committed treachery between themselves in telling a secret. I suppose you could use that as a sentence. I hope it helped.
saying a fake i love you is tantamount to treachery
The viceroy will be livid when hears of your treachery!
This justifies the use of this word, in a sentence.
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".
Alfalfa is a type of wheat, I think, so it would be used in a sentence as a noun.
If it were used in a sentence it would be easier to answer.
she jumped about playfully.
Please provide the sentence in which you would like the word "child's" used.
Treachery is the act of betrayal. Hyberbole is a gross overstatement, an over-reaction. So the two together would be an overstatement of a switching of sides say. 'I don't believe you ate at McDonald's! We always go to Burger King! This is treachery!'
Perfidy means to breach trust, to lie deliberately. The word implies deep treachery in a matter of complete trust and usually implies evil intent."The king was so shocked at Jason's perfidy that he had him beheaded."