Relentless and Unabated

Relentless adjective - Showing no signs of slackening or yielding in one's purpose.

Unabated is a synonym for relentless in continuous topic. In some cases you can use "Unabated" instead an adjective "Relentless", when it comes to topics like unremitting, persistent, tireless, untiring.

Nearby Word: relentlessly

Unabated adjective - Continuing at full strength or intensity.

Relentless is a synonym for unabated in absolute topic. You can use "Relentless" instead an adjective "Unabated", if it concerns topics such as merciless, tireless, untiring.