Multiple lanagues in hunspell / locale

I am finding myself more and more using French as well as English. I use hunspell (mostly on Slack and Signal) which picks languages from locale, Is there a way to have my locale support both at the same time so that hunspell can correct both English and French side-by-side? My locale currently read: ; locale LANG=en_GB.UTF-8 LC_CTYPE="en_GB.UTF-8" LC_NUMERIC="en_GB.UTF-8" LC_TIME="en_GB.UTF-8" LC_COLLATE="en_GB.UTF-8" LC_MONETARY="en_GB.UTF-8" LC_MESSAGES="en_GB.UTF-8" LC_PAPER="en_GB.UTF-8" LC_NAME="en_GB.UTF-8" LC_ADDRESS="en_GB.UTF-8" LC_TELEPHONE="en_GB.UTF-8" LC_MEASUREMENT="en_GB.UTF-8" LC_IDENTIFICATION="en_GB.UTF-8" LC_ALL=en_GB.UTF-8 It [appears that signal-desktop does not support multiple languages yet…](https://github.com/signalapp/Signal-Desktop/issues/1659) thus a hunspell solution would be welcome.