incompatible

Adjective

Synonyms: antagonistic uncongenial contrastive ill-sorted mismated unsuited discrepant inappropriate out or keeping unfitting

WordNet 3.0

Adjective (9)

not compatible“incompatible personalities”“incompatible colors”
used especially of drugs or muscles that counteract or neutralize each other's effectSynonyms: antagonistic
not suitable to your tastes or needs“the uncongenial roommates were always fighting”“the task was uncongenial to one sensitive to rebuffs”Synonyms: uncongenial
incapable of being used with or connected to other devices or components without modification
of words so related that one contrasts with the other“`rich' and `hard-up' are contrastive terms”Synonyms: contrastive
not easy to combine harmoniouslySynonyms: ill-sorted mismated unsuited
not compatible with other factsSynonyms: discrepant
not in keeping with what is correct or proper“completely inappropriate behavior”Synonyms: inappropriate out or keeping unfitting
used especially of solids or solutions; incapable of blending into a stable homogeneous mixture

Webster's Dictionary (GCIDE)

Incompatible \In`com*pat"i*ble\, n. (Med. & Chem.) An incompatible substance; esp., in pl., things which can not be placed or used together because of a change of chemical composition or of opposing medicinal qualities; as, the incompatibles of iron. [1913 Webster]

Incompatible \In`com*pat"i*ble\, a. [Pref. in- not + compatible: cf. F. incompatible.] [It was formerly sometimes written incompetible.] [1913 Webster]

1.Not compatible; so differing as to be incapable of harmonious combination or coexistence; inconsistent in thought or being; irreconcilably disagreeing; as, persons of incompatible tempers; incompatible colors, desires, ambition. [1913 Webster]

A strength and obduracy of character incompatible with his meek and innocent nature.— Southey.[1913 Webster]

2.(Chem.) Incapable of being together without mutual reaction or decomposition, as certain medicines. [1913 Webster]

Incompatible terms (Logic), terms which can not be combined in thought.

Syn: Inconsistent; incongruous; dissimilar; irreconcilable; unsuitable; disagreeing; inharmonious; discordant; repugnant; contradictory. See Inconsistent. [1913 Webster]