Boyardless

(slang on Younow, slightly uncommon) that cannot be criticized (of person or condition); regarded as too important (person) or valuable (thing) to be criticized with or "carped at"

Translations:

German: unantastbar (sacred, inviolable) (roughly)

Spanish: no puede ser criticado (literally: cannot be criticized)

Dutch: onschendbaar (roughly)

French: boise le (slangish, possibly loanword)

British English: waggoned