on the sly in Spanish
on the sly in Spanish
a escondidas
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
a cencerros tapados
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
a escondidillas
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
a lo zorro
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
caleta
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.
de extranjis
(idiomatic) Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.