mama

Borrowed from English mama, French maman, German Mama, Italian mamma, Russian ма́ма (máma), Spanish mamá.


papa

Borrowed from English papa, French papa, German Papa, Italian papà, Russian па́па (pápa), Spanish papá.


avo

Borrowed from Esperanto avo (“grandfather, grandparent”), Italian avo, Spanish abuelo and French aïeul, from Latin avus (“grandfather, ancestor, old man”), from Proto-Indo-European *h₂ewh₂yos.


patro

From Esperanto patro, from German Pater, Italian padre, Spanish padre, all ultimately from Latin pater, from Proto-Indo-European *ph₂tḗr.


matro

→ Esperanto: matro

Borrowed from Italian madre, Spanish madre, from Latin māter, from Proto-Indo-European *méh₂tēr.


divorco

Borrowed from English divorce, French divorce, Italian divorzio, Spanish divorcio.


frato

From Esperanto frato (“brother, sibling”), from Latin frater, from Proto-Indo-European *bʰréh₂tēr.


familio

Borrowed from Esperanto familio, English family, French famille, German Familie, Italian famiglia, Spanish familia..


onklo

Borrowed from Esperanto onklo, English uncle, French oncle, German Onkel, from Latin avunculus.


nevo

Borrowed from Esperanto nevo, English nephew, French neveu, German Neffe, Italian nipote, most from Latin nepos, from Proto-Indo-European *h₂népōts.


fratino

From frato (“sibling”) + -ino (feminine suffix).


kuzo

From Esperanto kuzo, from English/French cousin, from Latin consobrinus (com- + sobrinus).


filio

From Esperanto filo (“son, offspring”), influenced in form by its antecedent, Latin fīlius.


avino

From avo (“grandparent”) + -in- (feminine suffix), Esperanto avino.


kuzino

From Esperanto, from French cousin, cousine, from Latin consobrinus, kuzo + -ino.


onklino

From onklo (“uncle or aunt”) + -ino (feminine suffix).


nevino

From nevo (“nephew or niece, nibling”) + -ino (feminine suffix).


filiino

From filio (“child, offspring”) + -ino (feminine suffix).


kuzulo

From kuzo (“cousin”) + -ulo (masculine suffix).


filiulo

From filio (“child, offspring”) + -ulo (masculine suffix).


fratulo

From frato (“sibling”) + -ulo (masculine suffix).


spozulo

From spozo (“spouse”) + -ulo (masculine suffix).


spozino

From spozo (“spouse”) + -ino (feminine suffix).


onklulo

From onklo (“uncle or aunt”) + -ulo (masculine suffix).


avulo

From avo (“grandparent”) + -ulo (masculine suffix).


gefilii

ge- (“both sexes”) + filii (“children, offspring”)


nepoto

From Latin nepos, nepōtis (“grandson, granddaughter, nephew, descendant”), from Proto-Indo-European *h₂népōts.


genitoro

Borrowed from English genitor, French géniteur, Italian genitore, from Latin genitōrem, accusative singular of genitor. Probably through or by influence of Interlingue genitor.


spozo

Borrowed from Italian sposo/sposa, Spanish esposo/esposa, French époux/épouse, English spouse, all ultimately from Latin spōnsus (“bridegroom”)/spōnsa (“bride”), from spondere (“to vow, to pledge”), from Proto-Indo-European *spend-.


nepotulo

From nepoto (“grandchild”) + -ulo (masculine suffix).


nepotino

From nepoto (“grandchild”) + -ino (feminine suffix).


stifa

Borrowed from English step-, German stief-. Decision no. 745, Progreso V.

io-bor

step- (related by remarriage of a parent)


geavi

ge- (“both sexes”) + avi (“grandparents”)

prefix

(plural only) grandfathers and grandmothers


stif-filiino

From stif- (“step-”) + filiino (“daughter”).


stif-fratulo

From stif- (“step-”) + fratulo (“brother”).


stif-matro

From stif- (“step-”) + matro (“mother”).


stif-genitoro

From stif- (“step-”) + genitoro (“parent”).


stif-frato

From stif- (“step-”) + frato (“sibling”).


stif-patro

From stif- (“step-”) + patro (“father”).


stif-fratino

From stif- (“step-”) + fratino (“sister”).


preonklo

pre- (“great-”) + onklo (“uncle or aunt”)


geonkli

ge- (“both sexes”) + onkli (“uncle or aunt”)


genepoti

ge- (“both sexes”) + nepoti (“grandchildren”)

(plural only) grandsons and granddaughters