Question : Can you find a fifteen letter word?

Clues :
Letters 4, 15, 12, 4 spell a synonym of hindmost
Letters 3, 4, 7, 9, 5, 1, 6 spell a part of speech
Letters 13, 7, 1, 2,10, 11 spell a verb that means moving up/away after hitting a surface.
Letters 3, 8,14, 3 spell a soft, wet mass or pith

Answer :
unpronounceable
rear
pronoun
bounce
pulp