Imperturbable is a related term of unbiased.
As adjectives the difference between imperturbable and unbiased
is that imperturbable is not easily perturbed, upset or excited while unbiased is impartial or without bias or prejudice.
imperturbable
English
Adjective
(head)
not easily perturbed, upset or excited
calm and collected, even under pressure
unbiased
English
Adjective
(
en adjective)
impartial or without bias or prejudice
Related terms
* unbiasedness