Latten
Wit
desert
vent
The likely answer is "twenty." The "E" is probably incorrect.
Lound
Another word for a brass-like alloy that is 6 letters and ends in "en" is "latten."
Headache starts and ends with the letters he. Another word is heartache.
Wit
Aga
heap
luxuriant
Eagles
township
rampage
vent
minute, little, petite
The word, "trauma" seems to fit.