The Afrikaans word for sanity is, unsurprisingly once one reads it, “geestesgesondheid”. As in, “Hoe is jou geestesgesondheid vandag, tjomma?”. “Geestesgesondheid” is a portmanteau of the words “gees”, meaning spirit or psyche, and “gesondheid“, meaning health. The suffix “-heid”, much like the English suffix -ity, denotes a state or condition of being.

It follows then from the above that the Afrikaans word for sane is “geestesgesond”. One can get creative here if that’s too much of a mouthful. For instance, “gebalanseerd” (balanced), “uitgesorteer” (sorted) or even the stop-gap “nie mal nie” (not insane) can all be used if the context is right, so there’s never a reason to plug some English word in there like some rabid lingual anarchist on a conquest for Babel.

So, there you have it. Mystery explained.

If you intend to comment, please consider doing so at the original location (No sanity in Afrikaans?), where I will appreciate it so much more.