Inflexible, firm, firm, determined, and immovable are all synonyms for rigid. Flexible and plastic are these antonyms of rigid. And here are another 43 synonyms for rigid.
Rigid Synonyms
1. hard
- Firm
- Hard
- Impliable
- Inelastic
- Inflexible
- Non-flexible
- Stiff
- Taut
- Tight
- Unbending
- Unyielding
- Unmalleable
2. inflexible
- Firm
- Fixed
- Hard and fast
- Immutable
- Inflexible
- Invariable
- Set
- Unalterable
- Unchangeable
- Unvarying
- Cast-iron
3. stringent
- Determined
- Immovable
- Inflexible
- Intransigent
- Obdurate
- Resolute
- Rigorous
- Severe
- Stern
- Strict
- Stringent
- Unadaptable
- Uncompromising
- Unrelenting
- Unshakeable
- Unswerving
- Unwavering
- Unyielding
- Adamant