Tom is testy today, don't you think? - Yes. It's because he hasn't had his coffee yet.Tom está de mal genio hoy, ¿no te parece? - Sí. Lo que pasa es que no se ha tomado su café todavía.
What's the matter with you anyway? You're awfully testy today!¿Y a ti qué bicho te picó? ¡Estás de muy mal genio hoy!
The testy secretary at the front desk didn't exactly make us feel welcome.El secretario irritable en la recepción no nos hizo sentir bienvenidos que digamos.