unflappable

mod. not subject to distraction; imperturbable. She is totally unflappable.

Name	Pronounced	Usage
Eugenius	-	Ancient Greek (Latinized)
Luanna	loo-AN-ə	English (Rare)
Koos	KO:S	Dutch
Brooks	[bru:ks]
Fouad	-	Arabic
Baxter	BAKS-tər	English