Synonyms of under-the-table

1 Syllable
sly, sneak, qt
2 Syllables
backstairs, cryptic, stealthy, discreet, hush-hush, close, covert, sneaky, backdoor
3 Syllables
dissembled, sub-rosa, classified, disguised, inside, furtive, restricted
4 Syllables
camouflaged, secretive, underhanded, confidential, hole-and-corner, incognito, surreptitious
5 Syllables
dissimulated, unacknowledged