Lacking peers who share one's beliefs, experiences, practices, etc.
By oneself, solitary.
Not requiring anything further; merely.
By oneself; apart from, or exclusive of, others; solo.
Without outside help.
Used to emphasize the size or extent of something by selecting a subset.
Not permitting anything further; exclusively.
Certain in one's knowledge or belief.
Physically secure and certain, non-failing, reliable.
Certain to act or be a specified way.
Yes, expressing noncommittal agreement or consent.
Yes; of course.
You're welcome; polite response to being thanked.
Without doubt, certainly.