From Wiktionary, the free dictionary

English

Etymology

Borrowed from Latin sex- (“six”).

Prefix

sex-

1. A form of sexa-, meaning six.

Synonyms

• hex-, hexa-

Derived terms

• sextet
• sexagenarian
• sextuplet
• sexdactyly
• sextilis

Anagrams

• Xes, exs., sXe