i Register
In some senses, clamour is marked as obsolete, UK. Watch for register when choosing this word.
noun
British and Canada standard spelling of clamor.
Sickly eares Deaft with the clamours of their owne deare grones.
For when he knew his Rival freed and gone, / He ſwells with Wrath; he makes outrageous Moan: / He frets, he fumes, he ſtares, he ſtamps the Ground; / The hollow Tow'r with Clamours rings around: […]
verb
British and Canada standard spelling of clamor.
The second argument , against the integrity of the Law from this Omission , has been clamoured by a large Body of Answerers
To salute loudly.
At ſight of him the people with a ſhout / Rifted the Air clamouring thir god with praiſe,
To stun with noise.
Let them not come..in a Tribunitious Manner; For that is, to clamour Counsels, not to enforme them.
To repeat the strokes quickly on (bells) so as to produce a loud clang.