your guess is as good as mine
I don't know; I have no idea.
Meaning adapted from Wiktionary, available under CC BY-SA 4.0.
“I have no idea why he left; your guess is as good as mine.”
“When the manager asked when the shipment would arrive, I told him that your guess is as good as mine.”
“As the experts debated the mysterious origin of the ancient artifact, they eventually admitted that your guess is as good as mine regarding its true purpose.”
- 01
a good deal
Very much; to a great extent; a lot; lots.
- 02
all good
It's all good.
- 03
anyone's guess
A mystery; something unknown or unpredictable.
- 04
bill of goods
A set of misleading or deceptive claims.
- 05
but good
To a high degree; very thoroughly; in a most definite manner.
- 06
by guess or by gosh
at random
- 07
come from a good place
To be motivated by decency, kindness, or good intentions.
- 08
come up with the goods
To produce what was expected or required.
Last updated August 10, 2026