For Firefox there is the Dictionary Switcher extension: https://addons.mozilla.org/en-US/firefox/addon/dictionary-switcher/ https://addons.mozilla.org/en-US/fir

For Firefox there is the Dictionary Switcher extension: https://addons.mozilla.org/en-US/firefox/addon/dictionary-switcher/ https://addons.mozilla.org/en-US/firefox/addon/dictionary-sw... As hirsin said, SwiftKey does this really well on Android. It's probably my main irritation on iOS: having to switch keyboard all the time when I could just type English on the Swedish keyboard.