- disharmonic
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a) Not harmonic.
A person is harmonic with respect to his own generation and all even-numbered generations counting away from his own, and disharmonic with respect to odd-numbered generations. Thus a man is disharmonic with respect to his father and his son but harmonic with respect to his grandfather and his grandson.
b) (Australianist linguistics) Of or related to a generation an odd number of generations distant from a particular person.... there is also a special set of (non-singular first person) pronoun forms for use with disharmonic kin: those in the opposite generation set. ... The two disharmonic pronouns are used as polite forms when the addressee and speaker are in different alternate generation sets.
Wikipedia foundation.