Demon
OR
Monde
The five letter word that can be made from the letters 'eudledum' is elude.
Those letters spell noodle.
The letters spell the word calked. They also spell the word lacked.
The letters spell the 7 letter word endures. They also spell the word ensured.
Using all the letters in one word, Nothing.
cdaidonit
The letters ELEDRMA can also spell the word EMERALD.
The letters spell the word impede.
Those letters will spell terminating.
Aosxinnep
There is no one-word English anagram. The letters can spell the proper noun Sudovia, a cultural region of Lithuania. With an R instead of a D (typo?), the letters spell various.
These letters can be rearranged to spell the word studious.