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.

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.
See also:
  • think on (someone or something)
  • have got a leg up on (someone)
  • many's the time (that)
  • is it
  • many a time
  • many and many's the time (that)
  • many 's the time
  • languish
  • languish in
  • carry a torch for