| arcane(adjective, deep, unpublished) |
| armor |
| artful(adjective, sly, fraudulent) |
| at home(expression, indoors) |
| avant-garde(adjective, experimental, subversive) |
| back seat(expression, sub-rosa, groundward) |
| backdoor(adjective, deep, unpublished) |
| backstage(unknowing, hermetical, unbriefed) |
| backstairs(adjective, unknowing, taciturn, uncommunicative, hermetical) |
| behind the curtain(expression, idiom, unknowing, hermetical, unbriefed) |
| behind the scenes(expression, idiom, unknowing, hermetical, unbriefed) |
| beyond range(expression, isolated, reclusive, uncompanionable) |
| bigamous(fickle, untrustworthy, unprincipled) |
| birdbrained(unknowing, hermetical, unbriefed) |
| blind to(expression, unknowing, hermetical, unbriefed) |
| blockaded(isolated, reclusive, uncompanionable) |
| bottom(sub-rosa, groundward) |
| bottom-rung(sub-rosa, groundward) |
| bottomward(sub-rosa, groundward) |
| buttoned up(expression, adjective, unknowing, taciturn, uncommunicative) |