2 mellow/ˈmɛloʊ/verb
mellows;mellowed;mellowing
mellows;mellowed;mellowing
Britannica Dictionary definition of MELLOW
:to become or to cause (someone or something) to become less harsh, irritating, nervous, etc.[no object]
She was a tough and demanding teacher, but she hasmellowed in her old age.
The wine needs time tomellow.
[+ object]
She was a tough and demanding teacher, but old age hasmellowed her.
Timemellowed [=softened] their hard feelings.
mellow out
[phrasal verb]US, informal:to become relaxed and calm:to calm down — mellowness
noun[noncount]