Find Antonyms

subsonically Antonyms

Opposite of subsonically

Because the opposite of subsonically shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adverb (Context 1)

At a speed slower than the speed of sound (less than Mach 1).

Usage Example

"Commercial passenger airliners are designed to cruise supersonically to maximize fuel efficiency and cabin comfort."

Strongest
supersonically
hypersonically

• adverb (Context 2)

By means of or at a sound frequency below the lower threshold of normal human hearing (typically below 20 hertz).

Usage Example

"Large marine mammals and elephants can communicate ultrasonically across vast distances using low-frequency vibrations."

Strongest
ultrasonically

Similar words to subsonically

Words similar to subsonically shift depending on context. Common synonyms include:

infrasonically
See all synonyms of subsonically

• Nearby Words

subsistence
subsoil
subsonic
subsonically
subspecialist
subspecialize
substance

Cite this Entry

Wordmom. (2026). Antonyms for Subsonically. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/subsonically
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