Answer: thesauri

AnswerCrossword Clue
THESAURI

Reference books

THESAURI

Word books

THESAURI

Synonym sources

THESAURI
Places where land may be close to home
THESAURI
Synonym books
THESAURIWriters' references
THESAURIHustling is the same as cheating, according to these authorities
THESAURIBooks of synonyms
THESAURISources for synonyms
THESAURIRoget editions
THESAURISupply of Roget's books