Avuncular:
suggestive of an uncle especially in kindliness or geniality <avuncular indulgence> [Merriam-Webster]
Encountered in “Inside the Trial of Dylann Roof,” Jelani Cobb, The New Yorker:
Judge Richard Gergel was presiding. He is an avuncular silver-haired man with a reputation for efficiency and a liberal bent; in 2014, he issued a ruling that same-sex couples have the right to marry in South Carolina, and he was responsible for installing a portrait of Jonathan Jasper Wright, the state’s first black Supreme Court justice, in the Court building.
