on a hunch

With or based on a strong intuition (about something), rather than absolute knowledge. I opened the cabinet underneath the sink on a hunch that we'd find the keys there. On a hunch, I'd say that the president is likely to veto the bill.

See also: hunch, on

See also:

play (one's) hunch
play a hunch
a hunch
hunch
peer underneath (something)
feel (one's) way
feel one's way
feel your way
something tells me
something tells me (that)

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