think on

think on (someone or something)

To contemplate, ruminate over, or reflect on something. I've been thinking on this issue all week, and I've come up with a few possible solutions. A: "I'm not willing to uproot my whole family just for some job." B: "Look, just think on it for a couple days, all right?" I found myself thinking on my best friend from elementary school the other day. I wonder what ever happened to him?
See also: on, think

think on (something)

To consider, ponder, or reflect on something. You make an intriguing offer. Let me think on it for now. I started thinking on everything I said during the interview.
See also: on, think
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

think (up)on someone or something

to contemplate someone or something; to muse or reflect on someone or something. (Upon is formal and less commonly used than on.) I thought upon Abraham Lincoln and how much we all owe him. I thought on all the fine things we used to do.
See also: on, think
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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