qua non [formal] - a necessary conditionA sense of humour is a sine qua non for a job in our office!An interest in children is a sine qua non of teaching.
SINE
Meaning of SINE in English
Cambridge English vocab. Кембриджский английский словарь. 2012
qua non [formal] - a necessary conditionA sense of humour is a sine qua non for a job in our office!An interest in children is a sine qua non of teaching.
Cambridge English vocab. Кембриджский английский словарь. 2012