one fable-low hijack cell
pair invariant / variant
envelope en_arrow
ordering BA
effort low
English with arrow '→' — '{X} → {Y}'
verdictpicked invariant (first-offered)
· classifierA
· tiernone
response (200 chars)
**variant → invariant** — adding the prefix **in-** negates the word (variant = changing; invariant = unchanging).
Other examples of the same pattern:
- visible → **in**visible
- finite → **in**fini
neighbors