Blümerant: queasy, dizzy, giddy.
A Germanized loanword borowed from French „bleumourant“ (fading blue, in the sense of „dying blue“ due to „mourant“). Once your head is swimming, your skin turns pale and slightly blue because of the cyanosis.
Blümerant — dying blue — is endangered. I see a high risk of its extinction. Ferocious! Apparently not cool enough for the world out there. Despite this, blümerant is such a gem. Saying „Mir wird blümerant“ is the announcement of an indisposition without losing the countenance.