invariable
invariable — adjective
1. always remaining exactly the same, with no change in any situation or over time
always remaining exactly the same, with no change in any situation or over time
Rodrigo's daily routine was invariable — he walked the same path to work every morning.
predicative: [noun] was invariable
The restaurant's menu remained almost invariable for more than thirty years.
remained + invariable (linking verb pattern)
One invariable rule in the house was that no shoes were allowed past the front door.
Ada found comfort in her grandmother's invariable habit of serving tea at exactly four o'clock.
During the experiment, the temperature remained invariable despite the changes in the room.
- constant
more common in everyday use; emphasises continuity over time rather than absolute lack of change
- unchanging
most direct synonym at a similar level of formality; interchangeable in most contexts
- consistent
focuses on regularity and reliability rather than the impossibility of change
- immutable
more formal and absolute, suggesting something cannot be changed at all, not just never changing
文法句型
invariable + noun
remain + invariable
be + invariable
用法筆記
Often used attributively before nouns such as 'rule', 'habit', 'response', or 'routine'. More common in formal or written English than in everyday conversation, where 'always the same' or 'never changing' is preferred.