Is there a way to say "the opposite of a statement is not true"?
"the opposite of a statement is also true" can be said as "vice versa".
Is there a way to say "the opposite of a statement is not true"?
A affects B, but not the other way around.
A affects B, but not the converse.
A affects B, but not reciprocally.
When the opposite is true:
Jasper likes Lauren, and vice versa.
When the opposite is false:
Jasper likes Lauren, but not vice versa.
This simple negation works well.