Q. hasa- [þ] v. “to treat (medically), (help to) cure; to treat kindly, make easy” (Category: to Cure, Heal)
A verb in notes from 1969 given as haþa- and translated “treat kindly/make easy, (help to) cure” or just “treat (medically)”, derived from the root √HATH (PE22/166 notes #109-110). After þ > s in Quenya, it would be pronounced hasa-.
References ✧ PE22/166
|√HATHA > haþa-||[hatʰa-] > [haθa-] > [hasa-]||✧ PE22/166|