Erosion.
lathe
the word is optimistic
The anagram is mayhem.
The letters 'cellesitn' unscrambled spell the word lenticels.
The letters 'sheccer' unscrambled spell the word screech.
pureed
motorcade
quadrivium
fascination
MUSLIN
therapy
Vesper
octet
Laxity
Pepsin.
Ridiculous.
Achieved