The state, practice, or system of hetairism; a band or group of companions united by hetairistic bonds.
From Greek hetaireia, from hetairos (companion). The suffix -ry (or -ery) converts the root into a noun denoting the practice or place associated with the root concept, similar to archery or bakery.
Hetairy documents show that these weren't random friendships—they had legal status, inheritance rights, and succession rules, making them more like medieval feudal bonds than modern friendships, which is why understanding them changes how we read ancient history.
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