In American English, it's armor, color, favor, but in most cases, glamour, which comes from Scots, not Latin or French. Glamor is sometimes used in imitation of the spelling reform of other -our words to -or. Regardless, the adjective glamorous often drops the first "u". Saviour is a somewhat common variant of savior in the US. The British spelling is very common for honour (and favour) in the formal language of wedding invitations in the US.The name of the Space Shuttle Endeavour has a u in it as the spacecraft was named after Captain James Cook's ship, HMS Endeavour. The special car on Amtrak's Coast Starlight train is known as the Pacific Parlour car, not Pacific Parlor. Proper names such as Pearl Harbor or Sydney Harbour are usually spelled according to their native-variety spelling vocabulary.
The name of the herb savory is thus spelled everywhere, although the related adjective savo(u)ry, like savo(u)r, has a u in the UK. Honor (the name) and arbor (the tool) have -or in Britain, as does the word pallor. As a general noun, rigour /ˈrɪɡər/ has a u in the UK; the medical term rigor (sometimes /ˈraɪɡər/ does not, such as in rigor mortis, which is Latin. Derivations of rigour/rigor such as rigorous, however, are typically spelled without a u even in the UK.
The word armour was once somewhat common in American usage but has disappeared except in some brand names such as Under Armour.
· 4 months ago