A close friendship or the state of being friends with someone, especially in British schools or military contexts.
From 'chum' (a roommate or close friend, possibly from 'chamber-mate') plus the suffix '-ship' meaning a condition or relationship. The term became popular in 19th-century British institutions.
This word perfectly captures how British English creates relationship words with '-ship' (friendship, kinship, companionship), yet 'chumship' barely survives in modern usage—it's the linguistic equivalent of a historical artifact showing how social bonds were formally named in Victorian times.
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