- Learn English
-
Learn grammar
-
List of words
-
Study your cards
-
Hang On, Man!
-
Audio Books
-
More apps
- Recent searches
-
46th
-
obstructor
-
monitory
-
crescent
-
fulminate of mercury
-
approximately
-
strenuous
-
scarf out
-
mice
-
1790s
- Hide translation
acid test
acid test /ˈæsɪd tɛst/
noun
-
A rigorous or crucial appraisal
(
acid test
)
a rigorous or crucial appraisal