The cast of Sine qua non - 2010 includes: Sarah Siwak as Therapist

Sacrifice, practice, and commitment are the sine qua nonof our band to excel in the international competition.

You have the spelling wrong. It's sine qua non. The term refers to an essential requisite element for a condition or event to be possible. Usage: "Trust is the sine qua non of longstanding business relationships."

The Latin phrase 'cine qua non' has the meaning that something is essential. It also can mean that an action, condition, or ingredient is needed. The plural form of this phrase is 'sine qua nons'.

The direct Latin translation is desiderium or requisitum. There's also the phrase sine qua non for an indispensible condition. This is short for causa sine qua non, literally "a cause without which not," which was common in medieval philosophy.