Inconsiderate, a.
Etymology: [L. inconsideratus. See In- not, and Considerate.]
1. Not considerate; not attentive to safety or to propriety; not regarding the rights or feelings of others; hasty; careless; thoughtless; heedless; as, the young are generally inconsiderate; inconsiderate conduct. It is a very unhappy token of our corruption, that therinconsiderate among us as to sacrifice morality to politics. Addison.
2. Inconsiderable. [Obs.] E. Terry.
Syn. -- Thoughtless; inattentive; inadvertent; heedless; negligent; improvident; careless; imprudent; indiscreet; incautious; injudicious; rash; hasty.
Shades of meaning
Fernald has no entry of its own for inconsiderate; he lists it under bluff.
He lists it without comment; the entries above explain its neighbors.