on the sly (o) (deception) | en cachette (o) (deception) |
on the sly (o) (secret) | en secret (o) (secret) |
on the sly (o) (deception) | en douce (o) (deception) |
on the sly (o) (deception) | en secret (o) (deception) |
on the sly (o) (secret) | en douce (o) (secret) |
on the sly (o) (secret) | en cachette (o) (secret) |