Likely to happen.
Supporting, or giving ground for, belief, but not demonstrating.
Likely or most likely to be true.
A person who is likely to appear or do a certain thing.
Something that is likely.
Likely or expected to happen or become.
Anticipated in the near or far future.
Indicating grammatically an activity about to begin.
Of or relating to a prospect; furnishing a prospect.
Looking forward in time; acting with foresight.
A study that starts with the present situation and follows participants into the future
1613 March 2 (first performance), Francis Beaumont, “The Masque of the Inner-Temple and Gray’s Inn, Gray’s Inn and the Inner-Temple;[…]”, in The Dramatic Works of Ben Jonson, and Beaumont and Fletcher:[…], volume IV, London: […] John Stockdale,[…], published 1811, →OCLC, page 573, column 2
[T]hey [two pavillions] were trimmed on the inside with rich armour and military furniture, hanged up as upon the walls; and behind the tents there were represented, in prospective, the tops of divers other tents, as if it had been a camp.
A prospective (potential) member, student, employee, date, partner, etc.