1.
so basically, and so, that's why
A very casual discourse connector used to wrap up an explanation and state the result. A contracted form of というわけで, commonly used in spoken Japanese to transition smoothly.
てなわけで is a casual contraction of というわけで (and so, for that reason). The contraction という → てな is a common spoken abbreviation.
Contraction path
というわけで → ってなわけで → てなわけで
Usage
Often appears at the start of a concluding statement after the speaker has given an explanation or told a story. It signals "now you know the background, here's the conclusion." Also used to wrap up conversations or presentations in a casual way.
てなわけで has a breezy, storytelling quality. It is common in vlogs, casual presentations, and among friends but would sound too casual in a business meeting.
Formality scale
Related Words
Related:
そんなわけで (neutral equivalent)