1. Marked by firm determination or resolution; not shakable
   "unwavering loyalty"
   - firm, steadfast, steady, stiff, unbendable, unfaltering, unshakable, unshakeable 
2. Not showing abrupt variations
   - level

See also: resolute, steady, unwaveringly

• gander
• refractometer
• refractor
• refractoriness
• refractory
• refractory anaemia
• refractory anemia
• refractory period
• refractory pot
• refractory-lined
• refracture
• refrain
• reframe
• refrangible
• refresh
• refreshed
• refreshen
• refresher
• refresher course
• refreshful
• refreshfully
• refreshing
• refreshingly
• refreshment
• refried beans