What Latin word starts with the letter 'x'?

Answer 1

Xenium is a neuter gender noun that starts with the letter 'x'. It describes a 'present given to a guest'. It also may be translated loosely as a 'gift, present'.

Xerampelinae is a feminine gender noun. It's used in the plural form only. It describes 'dark red garments'.

Xiphias is a masculine gender noun. It designates 'sword fish'.

Xystici is a masculine gender noun. It's used in the plural form. It means 'athletes'.

And xystus is a masculine gender noun. It finds an equivalent form, of the same meaning, in 'xystum'. The two words refer to 'an open colonnade, a promenade, a walk planted with trees'.

Answer 2

Xavier is originally a Basque name, so it has no standard Latin spelling, but you could write it as Saverius.