We don't have synonyms for charles iii yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are charles ii, charles vii and charles xii.
(N) :
(Charles Philip Arthur George; born 14 November 1948) King of the United Kingdom and the 14 other Commonwealth realms, reigning since 8 September 2022.
(N) :
(born 1948) King of the United Kingdom and 14 other Commonwealth realms.
(N) :
an album by organist Charles Earland which was recorded in 1972 and 1973 and released on the Prestige label.
(N) :
(Charles Philip Arthur George; born 14 November 1948) King of the United Kingdom and the 14 other Commonwealth realms, reigning since 8 September 2022.
(N) :
(born 1948) King of the United Kingdom and 14 other Commonwealth realms.
(N) :
an album by organist Charles Earland which was recorded in 1972 and 1973 and released on the Prestige label.