Dispensable , gratuitous, inessential, needless, nonessential, un called for , unessential , un warranted
Ok so in basic terms, ad hominem is attacking your opponent and not there position. An example would be:
You cannot believe my opponent; his hair is untidy and his visage is beyond unprofessional.
By saying that the opponent is "untidy and unprofessional", you are attacking his character. Rather than arguing against his position, the attack of the opponent's character is Ad hominem.
I hope this helps :-)
Answer:
The red wavy underlines indicate that they are being flagged for any spelling errors and the green underlines mean they are being flagged for any grammatical errors.
Explanation:
That does not mean they might be incorrect though.