Etymology
Advertisement

stepbrother (n.)

also step-brother, mid-15c., from step- + brother (n.).

updated on November 27, 2013

Advertisement
Advertisement
Definitions of stepbrother from WordNet

stepbrother (n.)
a brother who has only one parent in common with you;
Synonyms: half-brother / half brother
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.