in the open air (adjective/adverb) al fresco: out-of-doors
Sinonime: artful, cloak-and-dagger, closet,
concealed, covert, foxy,
fraudulent,
furtive, hidden, hush-hush,
illegitimate,
illicit, in holes and corners, on the Q. T., on the quiet,
private,
sneaky, stealthy, surreptitious, under wraps, under-the-counter, undercover,
underground, underhand
Antonime: aboveboard, forthright, open, truthful