Entry: avuncular (adj.)
In context: "The tennis coach took Orin's decision hard, and Orin had had to hand him a Kleenex and stand there for several minutes under the poster of an avuncular Big Bill Tilden standing there in WWII-era long white pants and ruffling a ballboy's hair, Orin watching the Kleenex soggify and get holes blown through it while he tried to articulate just what he had meant by burned out and withered husk and carrot."
Definition: Of, belonging to, or resembling, an uncle.
Though also oddly:
b. (humorously) Of a pawnbroker: see uncle n. Also absol.
SNOOT score: 1
Source: Oxford English Dictionary