x-ray xenopus xenobian
x-ray
There are none. There might be some starting with ex, but a collective noun that starts with x doesn't exist.Collective nouns are an informal part of language. Any noun that suits the context can function as a collective noun; for example, a xenophobia of foreigners or a Xanax of xenophobes.
yea you have xlphone and xmen and x-ray
Xenophobia.
jinx
xraying
Things in Texas that begin with X
· xylophone
x-ray
vowels
· xylophone
xylophone
x-ray images
x-ray machine at Antananarivo Hospital
xerxes
xylodromus xyletinus
Xenophobe.
Xylophones were invented in Africa