Big Huge Thesaurus

subsonic

adjective

antonyms

• sonic
• supersonic

sounds kind of like

• savageness
• sheepishness
• sheepshank
• shevchenko
• show business
• spacing
• spaciousness
• speaking
• speciousness
• sphagnum moss
• spiciness
• spike mike
• spike moss
• spikemoss
• subconscious
• subgenus
• subjoining
• suboceanic
• subsequence
• sufficiency
• suspiciousness