constant

Un goutte à goutte constant perce la pierre.

Constant dripping wears away a stone.

Le flux de sang est normalement constant et continu.

The blood stream is usually constant and continuous.

Les langues sont soumises à un processus de changement constant.

Languages are in a constant process of change.

Il y a un flux constant de trafic sur cette route.

There's a constant flow of traffic on this road.

Rien n'est constant dans ce monde que l'inconstance.

There is nothing in this world constant, but inconstancy.