Meanings (ES + gloss)
posible
Able but not certain to happen; neither inevitable nor impossible.
It's not just possible, it's probable that there will be rain tomorrow.
Rain tomorrow is possible, but I wouldn't bet on it.
posible
Capable of being done or achieved; feasible.
And success in minor degree, in the sense in which he uses the term "success," is only somewhat more possible than success in winning the White House chair.
It's possible for anyone to learn to play the bagpipes.
Phrases
Word forms