Passive
From ACT Wiki
1. Investment funds - strategies.
Passive investment funds follow a predetermined formula.
2. Tax.
For tax purposes, passive income is investment income (rather than wages, salary, or business profits).
3.
Any structure involving relatively less judgement or initiative.
4. Marketing - net promoter scoring.
In net promoter scoring, "passive" means a customer that is relatively indifferent about a particular product or service.
They are neither a promoter, nor a detractor, in relation to it.