adjective
unfeeling, impartial
Synonyms: abstract, aloof, calm, candid, cold-blooded, cold-fish, collected, composed, cool, cool cat, couldn’t care less, detached, disinterested, fair, iceberg, impersonal, imperturbable, indifferent, judicial, just, laid back, moderate, neutral, nondiscriminatory, nonpartisan, objective, poker-faced, quiet, serene, sober, temperate, tough, unbiased, unemotional, unexcitable, unexcited, unflappable, uninvolved, unmoved, unprejudiced, unruffled
Antonyms: biased, emotional, excited, feeling, involved, moved, partial, passionate, prejudiced, subjective