without interest or concern; not caring; apathetic

his indifferent attitude toward the suffering of others.

having no bias, prejudice, or preference; impartial; disinterested.

neither good nor bad in character or quality; average; routine

an indifferent specimen.

not particularly good, important, etc.; unremarkable; unnotable

an indifferent success; an indifferent performance.

of only moderate amount, extent, etc.

not making a difference, or mattering, one way or the other.

immaterial or unimportant.

not essential or obligatory, as an observance.

making no difference or distinction, as between persons or things

indifferent justice.

neutral in chemical, electric, or magnetic quality.

Biology . not differentiated or specialized, as cells or tissues.

an ethically or morally indifferent act.

a person who is indifferent, esp. in matters of religion or politics.

Archaic . indifferently

I am indifferent well.

adjective

caring , compassionate , concerned , feeling , interested , involved , sympathetic

adjective

aloof , apathetic , blas , callous , cold , cool , detached , diffident , disinterested , dispassionate , distant , equitable , haughty , heartless , heedless , highbrow , impartial , impervious , inattentive , listless , neutral , nonchalant , nonpartisan , objective , passionless , phlegmatic , regardless , scornful , silent , stoical , supercilious , superior , unaroused , unbiased , uncaring , uncommunicative , unconcerned , unemotional , unimpressed , uninvolved , unmoved , unprejudiced , unresponsive , unsocial , unsympathetic , fair-minded , just , square , impersonal , impassive , incurious , insensible , lethargic , stolid , uninterested , average , common , commonplace , cut-and-dried , formulaic , garden , garden-variety , mediocre , plain , routine , run-of-the-mill , standard , stock , undistinguished , unexceptional , unremarkable , careless , casual , frigid , insouciant , lackadaisical , lukewarm , passable , perfunctory , pococurante , stoic , tolerable , unfeeling , uninspired , unmindful