Difference between Discourteous and Abrupt

DISCOURTEOUS vs ABRUPT: NOUN

Unexpectedly sudden.
Marked by sudden changes in subject and sharp transitions
Surprisingly and unceremoniously brusque in manner
Exceedingly sudden and unexpected
Extremely steep
Surprisingly curt; brusque.
Touching on one subject after another with sudden transitions.
Steeply inclined. : steep.
Terminating suddenly rather than gradually; truncate.
Broken off; very steep, or craggy, as rocks, precipices, banks; precipitous; steep.
Without notice to prepare the mind for the event; sudden; hasty; unceremonious.
Having sudden transitions from one subject to another; unconnected.
Suddenly terminating, as if cut off.

To break off; interrupt; disturb.
Broken or appearing as if broken away or off; marked by or showing a sudden breach or change of continuity; wanting continuation or completion: as, the path or the discourse came to an abrupt termination; an abrupt turn in a road. Hence Steep; precipitous: as, an abrupt cliff; an abrupt descent.
Figuratively, sudden; without notice to prepare the mind for the event; unceremonious: as, an abrupt entrance or address.
Lacking in continuity; having sudden transitions from one subject to another: as, an abrupt style.
In botany, terminating suddenly: as, an abrupt point: sometimes used in the sense of truncate: as, an abrupt leaf.
Dangerously steep

Unprofessional, Inconsiderate, Disrespectful, Rude, Short, Unceremonious, Abrupt, Caddish, Ungallant, Brusk, Curt, Unchivalrous, Brusque, Ungracious, Impolite

Rapid, Surprise, Brusque, Surprising, Untimely, Drastic, Dramatic, Unexpected, Disconnected, Discourteous, Staccato, Steep, Sharp, Precipitous, Sudden

Unprofessional, Inconsiderate, Disrespectful, Rude, Short, Unceremonious, Abrupt, Caddish, Ungallant, Brusk, Curt, Unchivalrous, Brusque, Ungracious, Impolite

Rapid, Surprise, Brusque, Surprising, Untimely, Drastic, Dramatic, Unexpected, Disconnected, Discourteous, Staccato, Steep, Sharp, Precipitous, Sudden

Always be courteous, even if the lawyer questioning you may appear discourteous.
Discourteous treatment of the public or fellow employees while on duty.
In some extreme instances, discourteous behavior may be considered workplace violence.
You will encounter a discourteous, pushy, or aggressive person on occasion.
That step would be irregular, and discourteous to the administration.
Your underwriting department Mitchell is very discourteous to its customers.
Discourteous treatment of the public or a fellow employee.
Why do you think the narrator was so discourteous?
Orlando FL employees are totally discourteous and abusive.
Unjust criticism and discourteous conduct are not actionable.

Avoid abrupt control movements when blades are turning.
Readers may also think the writing is abrupt.
Future abrupt reductions in thesummer Arctic sea ice.
And maybe an abrupt end to the game.
Abrupt cessation can cause vomiting, tremors, and convulsions.
Avoiding abrupt changes in rest cycles for employees.
The ending is abrupt with a weird flow.
The northwestern slope is more abrupt in its northern than in its southern portion, and is generally more abrupt than the southeastern slope.
She was abrupt with the gatekeeper, so the gatekeeper was abrupt in return.
Spontaneous accels are an abrupt transient increase in the FHR with an abrupt return to the baseline.