For Firefox there is the Dictionary Switcher extension: <a href="https:&#x2F;&#x2F;addons.mozilla.org&#x2F;en-US&#x2F;firefox&#x2F;addon&#x2F;dictionary-switcher&#x2F;" rel="nofollow">https:&#x2F;&#x2F;addons.mozilla.org&#x2F;en-US&#x2F;firefox&#x2F;addon&#x2F;dictionary-sw...</a><p>As hirsin said, SwiftKey does this really well on Android. It&#x27;s probably my main irritation on iOS: having to switch keyboard all the time when I could just type English on the Swedish keyboard.