adverb/enˈtonθes/
then, next, thereupon, at that time, at that point; then, therefore, so, thus; in that case
“Desde entonces, siempre he tenido cuidado.” — Since then I've always been careful.
Inherited from Old Spanish entonce, entonces, from Latin in + *tunce, the latter an archaic form of tunc (“then”). Compare Portuguese então and Romanian atunci.