Definition of "up to" [up to]

• Against; next to; near; towards; as far as. (preposition)
• Capable of. (preposition)
• Ready for. (preposition)
• Willing to participate in. (preposition)
• As much as; no more than. (preposition)

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• "A big man dressed in a black jacket and blue jeans, with a black silk-knit tie knotted over his white shirt, strode up to my window and knocked on the glass."
• "It would then be up to the forensic anthropologist to rearticulate the bodies as best she could in the ME's office."
• "At the time I held a microphone up to the television speaker to record the scene—the dialogue, yes, but mainly the song in the background, “If You Were Here” by Thompson Twins."