Moccasin.
The 7-letter word that can be formed using the letters in "inaptcvsh" is "pivants."
Sinkage is the seven letter word formed using the letters aeigkns.
Librarian is a 9 letter word that has letters BRAIN in it.
savages
forehead
stuck
coacted
AirWays
cantdogcoagentcognatecommandcommendcommentcongaeddecagondogfacefagotedmagnetomegatonmetonymmomentamontagetacnodetangoed
panther
monitor
discant