A verb appearing as ᴱQ. qolo- “to ail” in the Qenya Lexicon of the 1910s under the early root ᴱ√QOLO (QL/78).

Neo-Quenya: I’d retain this verb as ᴺQ. quol- “to ail, *be sick”, but would assume it applies to any kind of physical ailment (including injury), not just disease. Not all Neo-Quenya writers accept quo- as a valid combination; see the entry on how [wo] became [o] for further discussion.