on the sly

An informal expression meaning doing something secretly, stealthily, or in a way that avoids being noticed by others.

ruНеформальное выражение, означающее делать что-то тайно, скрытно или так, чтобы избежать внимания других.esExpresión informal que significa hacer algo en secreto, ocultamente o de manera que se evite llamar la atención de los demás.frExpression informelle signifiant faire quelque chose en secret, discrètement ou de manière à éviter l'attention des autres.deUmgangssprachlicher Ausdruck dafür, etwas heimlich, verdeckt oder unbemerkt von anderen zu tun.ptExpressão informal que significa fazer algo de maneira secreta, escondida ou sem que os outros percebam.zh非正式用语，表示偷偷地、暗地里做某事，以免被他人发现或注意。arتعبير غير رسمي يعني فعل شيء ما في الخفاء أو سرًّا أو بطريقة يتجنب بها لفت انتباه الآخرين.

1. Secretly or stealthily B2 informal

   Doing something in a secret or hidden way, often to avoid being noticed or caught.

   • He was eating sweets on the sly, even though his doctor told him to avoid sugar.
   • She took a nap on the sly during the long meeting.
   • They were passing notes to each other on the sly in class.

   ruТайкомesa escondidasfren secretdeHeimlichptÀs escondidaszh偷偷地arسرًا