1. septet
The longest word you can make with these letters is jeeped.
Angle uses 5 for a start. lounge for 6
Theorem uses the letters listed.
There are no words that use all of those letters, but the highest scoring word possible with those words is the word PITIES.
head
Leadens
decaf
The letters spell the word effects. The word uses all seven letters.
ignoble
vertical you hike
its a deisease
The letters spell the word airplanes. The word uses all nine letters.