Similar words
miembro
miembro and socio are close synonyms for "member"; socio also separately means "partner," in business.
Similar in other languages
English
spouse
Close — a partner relates to a spouse.
Practice
1 What does socio mean?
partner, member
2 Fill the gap: Es ___ del club de tenis.
Full sentence: Es socio del club de tenis. (He is a member of the tennis club.)
3 Which fingerprint chart matches socio?
socio: neutral register, common frequency, general domain, neutral connotation.