Definify.com

Webster 1913 Edition

adv.

In an inconsiderate manner.

adv.

Without due consideration or regard to consequences; heedlessly; carelessly; rashly; imprudently.

inconsiderately ‎(comparative more inconsiderately, superlative most inconsiderately)

In an inconsiderate manner.
He inconsiderately let the twig snap back at her.
Acting without consideration.
Inconsiderately, he pressed on when she paused.

in an inconsiderate manner