Not agitated emotionally; calm:
The definition of calm is someone or something who is peaceful and free from stress or worries.
The definition of composed is calm.
Neither warm nor very cold; moderately cold:
Not rigorous or strict.
The definition of deliberate is doing something on purpose and with careful thought.
The definition of detached is separate or not connected, or not emotionally involved.
Having an even number in a sequence.
Unshakably calm and collected:
Without warmth or enthusiasm; showing cool lack of concern; casually indifferent
Find another word for unflappable. In this page you can discover 25 synonyms, antonyms, idiomatic expressions, and related words for unflappable, like: self-possessed, serene, unruffled, calm, composed, upset, collected, cool, relaxed, deliberate and unexcitable.