You've given us eight letters. That's probably "endeavour."
Strenuous is an adjective. Strenuous means requiring or using great exertion.
The workout was quite strenuous.
Six letter words using the letters 'nuspiegn' are ensign, supine, and genius.
Breeder is a 7 letter words using only those letters
Using all 7 letters you get rewords
You can not spell any 4 letter words with the 3RD letter N using only the letters pmhlijkssxt. The letters do not include the letter N.
'PROSCENIUM' itself is the only 10-letter word using those letters. There are several 8-letter words, but no other 10-letter ones.
An eight letter word with three vowels using those letters is scavenge.Eight letter words with four vowels using those letters are agencies and envisage.
Librarian is a 9 letter word that has letters BRAIN in it.
Some three letter words using the letters FROTY are:forfortfortyfrofryoforrottotoyTroytryyo
Too much strenuous exercise can result in jury.
There are no six-letter English words using those letters.