There are lots of words that are 7 letters long beginning with E and ending in T
eg:
Element
Encrypt
Evilest
Exhaust
Exhibit
Easiest
just to name a few.
Sandman (starts with S ends with N - 7 letter word)
Ability is a 7 letter word.
chaotic
falloff
A seven (7) letter word that starts with M and ends with O: memento
rotunda
avarice
yeshiva.
Hosanna
undoing
Utrecht
Santana