Talwīn: Shifting from one state to the next
Sufi teachers use this word for a heart that keeps changing color, sure of one thing on Monday and sure of its opposite on Friday. Someone living that way feels sincere in each swing, since every mood arrives with good reasons attached. The trouble is that nothing ever gets settled, and after years the person still cannot say where they stand.
Shirk khafī: Hidden idolatry
Al-Ghazali warned about the partner a person keeps quietly beside God, too small to admit and too useful to drop. Almost nobody picks two loyalties out loud. The second one gets held back as insurance, in case the first disappoints, and naming it aloud is exactly what people avoid, because it only survives while nobody mentions it.
Ghafla: Heedlessness
The word covers the fog a person lives in while the big question stays unasked. Loyalty drifts along on habit, and the days stay busy enough that nothing forces a hard look at it. When someone finally puts the question straight, the first response is often silence, because no answer was ever prepared, only a routine.
Tawḥīd: Holding God as one
Sufi teachers treat this word as more than a count of how many gods exist. It describes a heart with one center, where everything else falls in behind. A divided heart spends itself keeping both sides satisfied, and the strain wears a person down long before they admit it, while a single center makes ordinary life simpler, since only one voice is left to answer to.
ʿAzm: Firm resolve
The Quran praises the messengers of firm resolve, the ones who settled the matter instead of hedging. Staying undecided feels safe, because nothing has been given up yet and every door is still open. Resolve shuts one of those doors, and most people find the weight lifts once it closes.