A noun appearing as ᴱQ. qeleksie “rot, corruption” in the Qenya Lexicon probably based on qeletya “rot” (past tense qeleksine), both under the same early root ᴱ√QELE “perish, die, decay, fail” (QL/76).

Neo-Quenya: Since I retain ᴺQ. queletya- “to rot” for purposes of Neo-Quenya I would retain this noun as well, but adapted as ᴺQ. queletië “rot, corruption” to better fit later Quenya phonology.