Russian ⇄ Chinese Czech Danish Dutch English French Georgian German Hungarian Italian Japanese Kalmyk Latvian Norwegian Bokmål Polish Portuguese Spanish Tajik Ukrainian Vietnamese

на авось stresses
gen.	on the off-chance; cross-your-finger mentality (triumfov); in a haphazard way (Andrey Truhachev); as luck would get it; as luck would have it; on spec (DC); at random; hit-or-miss; in a happy-go-lucky fashion (Anglophile); on the chance (that ... Anglophile); hit or miss; hitty missy; haphazardly (Andrey Truhachev); by habnab; by guesswork; Hail Mary (any attempt with a small chance of success. New Oxford American Dictionary : a Hail Mary plan encyclopedia.com Alexander Demidov)
dipl.	venture at random (bigmaxus); venture on the off-chance (bigmaxus)
fig.	on a roll of the dice (Побеdа)
Gruzovik, inf.	on the off-chance; haphazardly
inf.	at a venture (Andrey Truhachev); at haphazard (Andrey Truhachev); counting on luck; counting on good fortune; hoping for the best (george serebryakov); trusting to luck (george serebryakov); by guess and by God (george serebryakov); on the off chance (I sent in an application on the off chance I'd get the job.); for the hell of it; on the off chance
obs.	rovingly

на авось: 42 phrases in 11 subjects

Chess	1
Diplomacy	3
Figurative	1
Foreign policy	2
General	15
Idiomatic	4
Informal	6
Makarov	3
Mass media	1
Sakhalin	3
Sakhalin R	3