1 (rendir) to produce a good quantity
hoy no me ha cundido el trabajo I didn't get very far with my work today; I didn't get much work done today; no me cunde el tiempo I'm not getting very far; I'm not getting a lot done; I'm not making very much headway
2 (extenderse) to spread
la noticia cundió the news spread; cunde el rumor que ... there's a rumour going round that ...; ¡que no cunda el pánico! there's no need for panic!; don't panic!
3 (multiplicarse) to increase
van cundiendo los efectos del paro the effects of unemployment are multiplying