adverb/dɔ̃k/
therefore, consequently; thus
“René Descartes, 17ᵗʰ Century Je pense, donc je suis.” — I think, therefore I am.
Related: et moi donc, tiens donc, je pense, donc je suis
Inherited from Old French dunc, from Vulgar Latin dunc, from a crossing of Latin tunc with dum. Compare Italian dunque, Occitan donc and Catalan doncs.