for one thing

US /fɔːr wʌn θɪŋ/
UK /fɔːr wʌn θɪŋ/
"for one thing" picture
1.

para empezar, en primer lugar

used to introduce one reason, among others, for something

:
I can't go out tonight; for one thing, I have to study.
No puedo salir esta noche; para empezar, tengo que estudiar.
Why didn't you tell me? Well, for one thing, you were busy.
¿Por qué no me lo dijiste? Bueno, para empezar, estabas ocupado.