[ sis-ter ]
/ ˈsɪs tər /



Origin of sister

before 900; Middle English (noun) < Old Norse systir; cognate with Old English sweoster, Dutch zuster, German Schwester, Gothic swistar; akin to Serbo-Croatian sèstra, Lithuanian sesuõ, Latin soror (< *swesor), Old Irish siur, Welsh chwaer, Sanskrit svasar sister, Greek éor daughter, niece

Related forms

sis·ter·less, adjectivesis·ter·like, adjectivenon·sis·ter, noun, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sister

British Dictionary definitions for sister


/ (ˈsɪstə) /


Word Origin for sister

Old English sweostor; related to Old Norse systir, Old High German swester, Gothic swistar
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012