Webster's Revised Unabridged Dictionary · 1913

Ajar

Ajar ({not transcribed}) , adverb

[Old English on char ajar, on the turn; Anglo-Saxon cerr, cyrr, turn, akin to German kehren to turn, and to Dutch akerre. See Char.]

Slightly turned or opened; as, the door was standing ajar.

Ajar ({not transcribed}) , adverb

[Prefix a- + jar.]

In a state of discord; out of harmony; as, he is ajar with the world.