Or else Definition 1 of 2Pro Tip 1/3Implied Ultimatum Indicates a final warning, stressing the seriousness of the consequences. Clean your room, or else you'll lose your allowance. Pro Tip 2/3Threatening Tone Often conveys a sense of intimidation or a threat in informal situations. Stop teasing your sister, or else! Pro Tip 3/3Consequence Specific When using 'or else,' be clear about the specific consequence mentioned next. Apologize now, or else you'll regret it.