This could be a cheerleader, supporter, or booster.
Also motivator or inspiration.
The meaning of team mate is somebody who is a true member of a team. Someone who is loyal, trust worthy and respectful to everybody and encourages everybody to do there best.
One possible substitute for "their" is "his" or "her" depending on the gender of the person/people being referred to. Another substitute can be "its" when referring to a non-human object or entity.
Yes, the indefinite pronoun 'everybody' is a third person pronoun.The third person is the person spoken about.The indefinite pronoun 'everybody' takes the place of a noun for an unknown or unnamed person spoken about.The indefinite pronoun 'everybody' can also function as a second person pronoun, a word for a person spoken to.Examples:It would be a wonderful world if everybody was like you. (third person, all of the people in the world)Everybody is welcome at the street fair. (third person, all people)Is everybody ready? (second person, the people spoken to)
The word is optimist.(A person who is negative is a pessimist.)
An invalid
The word is busybody.
One word is reprobate.
The word could be "nitpicker."
Encourage is a verb.
Yes, the word 'everybody' is a pronoun, an indefinite pronoun, a word that takes the place of a noun for an unknown or unnamed number of people. The pronoun 'everybody' is a third person, singular form (everybody).Example: Everybody is invited to the company picnic.
An eavesdropper.
Normally it is an administrator or manager.