Off and Slack

Off adjective - Falling short of a standard.

Slack and off are semantically related in inferior topic. In some cases you can use "Slack" instead an adjective "Off", when it comes to topics like increase.

Nearby Word: offing

Slack adjective - Failing to give proper care and attention.

Off and slack are semantically related in increase topic. Sometimes you can use "Off" instead an adjective "Slack".

Nearby Words: slacken, slackened, slackness, slacker, slacked