record-breaking 
adjective
Surpassing a record or best-ever achievement: the fair attracted a record-breaking 10,678 visitors...
- Jack, emboldened by his record-breaking achievements on that tour, refused.
- Mr Hempleman-Adams is thrilled at his latest record-breaking achievements.
- That dedication has been at the root of his record-breaking achievements.
Derivatives
record-breaker
/ noun ...- While it doesn't include a figure for 1998, industry-wide profits the year before that were $2 billion - making 1997, 2003 and 2004 all record-breakers.
- They make the unlikeliest of record-breakers but these sportswomen are determined to beat inexperience and make the 3,000-mile journey from the Canaries to Barbados faster than any men.
- Other runners, home long before us, clapped and cheered us on the final stretch as though we were record-breakers.
- stop off (or over)
- stop one's ears
- stop out
- stopover
- stoppable
- stoppage
- stoppage time
- Stoppard, Sir Tom
- stop payment
- stopped diapason
- stopper
- stopping
- stopping point
- stopping train
- stopple
- stop press
- stop short
- stop short of
- stop someone dead
- stop someone short
- stop someone's mouth
- stop something down
- stop something out
- stop-start
- stopstreet