The best replacement for cuando is quando.

The best alternatives to cuando are rated as following:
★★★★★  quando
★★  cuanto
★★  mientras
★  que hora

Your alternative for cuando is not listed? Suggest!
Speaking about cuando, one probably shouldn't forget about subjunctive.

Other search terms related to cuando and their ratings are:
★★★★★ subjunctive
★★ subjunctive spanish
★ imperfect
You have in mind a companion for cuando and it is not yet here? Propose!



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cuando
quando
cuanto