- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
boundary
-
hierarchical
-
intrepid
-
housatonic river
-
nothing
-
antidotal
-
verb
-
knit
-
busy
-
polemical
- Hide translation
acid test
acid test /ˈæsɪd tɛst/
noun
-
A rigorous or crucial appraisal
(
acid test
)
a rigorous or crucial appraisal