more than (someone/something) bargained for

something in addition to what was expected.

The pain caused by the operation was much more than I bargained for.

Usage notes: often used with get:

Sarah was looking for a challenge, but she may have gotten more than she bargained for in this job.

• a grass widow
• a greasy spoon
• a great deal
• a great deal of
• a great deal of something
• agree to disagree
• a grey area
• a grin like a Cheshire cat
• a guiding light
• a guiding spirit
• a guilt trip
• a guinea pig
• a gut-bucket
• a gut feeling
• a gut reaction
• a hair out of place
• a hair's breadth
• a hair shirt
• a halfway house
• a half-wit
• a hand-me-down
• a hanger-on
• a hang-up
• a happy accident
• a happy hunting ground