I'd use "n'importe quoi" :) But I suppose it depends on what you say:) Give me whichever you have: Donne mois ça que tu as... Give me whichever you prefer: Donne mois quel que tu préfères... Wichever reason.... : N'importe quel raison... I hope it's ok and useful:)

You can use the expressions : 'quel (le) que soit' or 'selon ce que' Whichever you choose, I hope you're happy with it. Quel que soit celui que vous choisirez, j'espère que vous en serez content. Whichever you prefer selon ce que vous préférez

There's no such word for "whichever" in french, but there are many ways of expressing it depending on the context. Check it out : http://en.bab.la/dictionary/english-french/whichever

thank you very much both of you. that was really helpful :D

donne-moi n'importe + xxx where xxx is what (quoi quel quelle) and has to agree with the noun like masculin/feminie singular/plural donnez-moi n'importe + xxx