Without discrimination or discernment; indiscriminately. Obsolete.

Without respect or regard; disrespectfully. Obsolete.

With little respect or ceremony; disparagingly, slightingly. Now rare.

Slightingly.

disrespectfully.

Without showing respect; disrespectfully. Obsolete.

In a slighting manner; contemptuously, disdainfully; with little regard or respect.

In a disrespectful manner.

With haughty carelessness, disdainfully.

Slightingly; disdainfully.

(un-, prefix1 affix 5.)