1. Related by blood
   - akin, cognate, consanguine, consanguineous, consanguineal, kin

See also: related

• split up
• split-brain technique
• split-half correlation
• split-level
• split-pea
• split-pea soup
• splitsaw
• splitsville
• splitter
• splitting
• splitworm
• splodge
• splosh
• splotch
• splotched
• splotchy
• splurge
• splutter
• Spock
• Spode
• Spodoptera
• Spodoptera exigua
• Spodoptera frugiperda
• spodumene
• spoil