That is the correct spelling of the plural word "debaters" (those engaged in debate).
Yes, the word 'warrior' is a noun, a word for someone engaged in or experienced in warfare; a word for a person.
That is the proper spelling of "engaged" (busy, or betrothed).
Pregnant.
The word you are possibly looking for is "question".
The likely word is "realtor" (one engaged in the real estate business).
Fiance if you are engaged
The likely word may be fiance or fiancee. meaning either a man or woman engaged to marry.fiance - man engaged to marry (French fiancé)fiancee - oman engaged to marry (French fiancée)
The word 'practitioner' is a noun, a word for someone engaged in a skilled job or activity; a word for a person.
If you are describing someone wicked or villainous, the word is nefarious.
preserative is a word used by someone who cannot spell preservative
The likely word is "coward" (someone dishonorably afraid).