TOP

Definition of rock solid adjective from the Oxford Advanced Learner's Dictionary

rock solid

adjective
 
/ˌrɒk ˈsɒlɪd/
 
/ˌrɑːk ˈsɑːlɪd/
jump to other results
  1. that you can trust not to change or to disappear
    • The support for the party was rock solid.
  2. extremely hard and not likely to break
    • The ice on the river was rock solid.
See rock solid in the Oxford Advanced American Dictionary
Check pronunciation: rock solid

Nearby words

alloy
noun
 
 
From the Topic
Physics and chemistry
C2
Oxford Learner's Dictionaries Word of the Day