1. Not to be placated or appeased or moved by entreaty
   - grim, inexorable, relentless, stern, unforgiving, unrelenting

See also: implacable

• Circe
• circinate
• Circinus
• Circis siliquastrum
• circle
• circle around
• circle of curvature
• circle of Willis
• circle round
• circlet
• circlip
• circuit
• circuit board
• circuit breaker
• circuit card
• circuit court of appeals
• circuitous
• circuitously
• circuitry
• circuity
• circular
• circular file
• circular function
• circular measure
• circular plane