big on (something)(redirected from big on it)
big on (something)
Very interested or invested in something. My sister loves going to clubs because she's really big on dancing. My family is big on education, so I know I'm going to college next year.
Enthusiastic about, as in Dad is big on Christmas with the whole family. [Slang; mid-1800s]
Enthusiastic about; partial to: "a patriotic youth organization big on military-style marching drills" (Earl Swift).