Synonyms for Breakneck

Synonyms starting with letter S

• speedy

  extremely fast, fast
• swift

  fast
• snappy
• sudden
• sharp
• splitting
• supersonic
• steep
• smart
• sheer
• speedball
• short
• slapdash
• summary
• straight-up
• snap
• spirited
• sprightly
• spry
• screaming
• spanking
• short-lived
• shaking a leg
• serious
• serpentine
• shaky
• speculative
• superficial
• slambang
• subitaneous