Synonyms for "off-the-books" (10 found)

Ranked by relevance and common usage.

Closest matches (2)

Adjective(2 words)

abstruseclandestine

Strong matches (3)

Adjective(3 words)

cloak-and-daggercovertdeep-laid

Related words (5)

Adjective(5 words)

furtivehugger-muggermysterioussub rosaunderground

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.