An adjective appearing as ᴱQ. qeleksima “corrupt, rotten” 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 adjective as well, but adapted as ᴺQ. queletima “corrupt, rotten” to better fit later Quenya phonology.