sine qua non
/ˌsɪneɪ kwɑː ˈnɒn/
an essential condition; something absolutely necessary
“Trust is the sine qua non of any relationship.”
Origin: Latin: sine without + qua which (ablative of quae) + non not; literally without which not
/ˌsɪneɪ kwɑː ˈnɒn/
an essential condition; something absolutely necessary
“Trust is the sine qua non of any relationship.”
Origin: Latin: sine without + qua which (ablative of quae) + non not; literally without which not