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Related to weigh on: pass along, at first, come in handy, weighed against
weigh (up)on someone
Fig. to burden or worry someone. (Upon is formal and less commonly used than on.) The problems at the office were beginning to weigh upon Mr. Franklin. My problems began to weigh on me.
weigh on somebody
to cause someone anxiety or worry Her daughter's illness definitely weighed on her mind.
weigh on something
to push something down High energy prices weigh on a company's profits by increasing production costs.
Usage notes: usually used in connection with financial markets or prices
Also, weigh upon. Depress, as in His criticism weighed on her, or The long silence began to weigh upon us. This idiom was first recorded in 1775.
weigh onor weigh upon
1. To cause to sink or bend heavily by or as if by added weight: The bad news weighed on the prices of oil stocks. A coating of ice weighed upon the slender branches.
2. To preoccupy someone with a feeling of guilt or blame: The consequences of their mistake weighed on them. Heavy guilt weighed upon the thief.