Q; What is the longest word all of whose contiguous subsequences are words?

A

AMUSERS (7)

AMUSERS->AMUSER->AMUSE->AMUS->AMU->AM MUSERS->MUSER->MUSE->MUS->MU USERS->USER->USE->US SERS->SER->SE ERS->ER RS

All words are in Webster's Third unless otherwise indicated.

Here are definitions for the less common words

AMU: a unit of mass, formerly an acronym for Atomic Mass Unit [RH2? MU: a Greek letter SER: a unit of weight in India, a variant of SEER [RH2, SOED? SE: a Chinese zither [SOED? ERS: ervil [RH2? ER: interjection used to express hesitation [RH2, SOED?

RH2 = Random House Unabridged Dictionary, Second Edition SOED = Shorter Oxford English Dictionary

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