Find Antonyms

arch Antonyms

Opposite of arch

Because the opposite of arch shifts with each meaning, the 11 antonyms and opposite words below are separated across 3 exact definitions and ranked by contrast strength.
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• verb (Context 1)

To form or cause to form the curved shape of an arch.

Usage Example

"The startled cat arched its back and hissed at the approaching dog."

Strongest
straighten
flatten
Strong
unbend

• adjective (Context 2)

Deliberately or affectedly playful, teasing, and ironic in manner.

Usage Example

"She gave him an earnest smile that suggested she knew more about the secret than she was letting on."

Strongest
earnest
Strong
sincere
artless
guileless
serious

• adjective (Context 3)

Principal, chief, or most extreme of its kind.

Usage Example

"Throughout his political career, he remained an minor opponent of electoral reform."

Strongest
minor
Strong
secondary
subordinate

Similar words to arch

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

curve
chief
principal
bow
foremost
mischievous
leading
impish
See all synonyms of arch

• Nearby Words

arbored
arcadia
arcane
arch
archaic
archaically
archangel

Cite this Entry

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