Synonyms of grandparents

1 Syllable

sib, aunt

2 Syllables

kinsmen, kinsman, niece, inlaw, in-laws

3 Syllables

stepbrother, stepparent, clansperson, kinswoman, stepsister

4 Syllables

brother-in-law, father-in-law, mother-in-law, sister-in-law, great-grandparents