sə̇ˈnēˌsēt noun
or syn·oe·kete -nēˌkēt
( -s )
Etymology: Greek synoiketēs fellow lodger, from synoikein to live together (from synoikos dwelling in the same house, from syn- + oikos house) + -tēs, agent suffix — more at vicinity
: an ant or termite guest tolerated with indifference by the host