- AURAL means heard; ORAL means spoken.
- RAISE means erect; RAZE means tear down.
- SUCCOR means aid; SUCKER means hoodwink.
- ENUMERABLE means countable; INNUMERABLE means uncountable.
- ERUPT means burst out; IRRUPT means burst in.
- ERADICATE means pull up by the roots; IRRADICATE means root deeply.
- PETALLESS means lacking petals; PETALOUS means having petals.
- RECKLESS means careless; WRECKLESS means careful.