fixing would be used as a verb. It would say something like: I am fixing the computer right now.
What is that? I am fixing that.
as the tailor was fixing my dress i stood on a hassock for proper measurements.
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This justifies the use of this word, in a sentence.
In a sentence the word psychopath would be used as a noun.
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".
Tangible is a word used to describe something that you can see and touch. A sentence using this word would be, she would not have believed it if it was not tangible.
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.
She demonstrated a natural aptitude for painting by creating a beautiful masterpiece in just a few hours.
I would be more apt to use it if I understood how it is used.