Cases of word usage

1) to form a picture or idea of (something) in the mind; to think of (something) as probable (imagine)

2) situated in the exterior area of; situated along the outer edge of; not likely or probable (outside)

3) a forecast of the probable course of a disease or illness (prognosis)

4) probable or possible (prospective)

5) a probable change (to another condition or activity) (tendency)

6) a person who is considered the poorest, weakest, the probable loser in a competition etc (underdog)