amadelphous

\\|amə|delfəs\ adjective

Etymology: irregular from Greek hama together with + adelphos brotherly, from adelphos brother — more at same, -adelphous

: gregarious

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amadelphous, a.

(æməˈdɛlfəs)

[improp. for hamadelphous, f. Gr. ἅµα together + ἀδελϕός brother, brotherly + -ous.]

‘Living in society or in flocks.’ Syd. Soc. Lex. 1879.