ballast, carjack, fanfare, lanyard, mallard, ransack, pancake, yardarm
It could be mallard.
Mammals is the word.
jacuzzi
pontoon, monsoon, Kowloon.
tyranny
Outdone, outmove, outvote, outwore.
Well, isn't that a fun little puzzle! Let's see if we can find a word that fits the bill. How about the word "Infinite"? It has 'N' as the 2nd, 5th, and 6th letter. Keep exploring the beauty of words and you'll find even more delightful surprises along the way.
amoebas
deglaze
battles
command
Outline