widen(redirected from widener)
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widen (one's) horizons
To have or seek out new experiences, especially if one's experiences have been relatively limited. I'm really nervous to live at school, but I know I need to widen my horizons and get some experience living without my family. I can't believe that Molly has never left the state before! She seriously needs to widen her horizons!
broaden/widen somebody's horizons
to increase the range of things that someone knows about, has experienced, or is able to do This trip to the Far East has certainly broadened our family's horizons.