definition ulit

excuse
Noun

an explanation offered to justify an action which has been criticized or as a reason for not fulfilling an obligation, etc.

n.1. An explanation offered to justify or obtain forgiveness.

2. A reason or grounds for excusing: Ignorance is no excuse for breaking the law.

3. The act of excusing.

4. A note explaining an absence.

5. Informal An inferior example: a poor excuse for a poet; a sorry excuse for a car.

excuse - a poor example; "it was an apology for a meal"; "a poor excuse for an automobile"

~~~~~

reason
n.

1. The basis or motive for an action, decision, or conviction.

2. A declaration made to explain or justify action, decision, or conviction: inquired about her reason for leaving.

3. An underlying fact or cause that provides logical sense for a premise or occurrence: There is reason to believe that the accused did not commit this crime.

4. The capacity for logical, rational, and analytic thought; intelligence.

5. Good judgment; sound sense.

6. A normal mental state; sanity: He has lost his reason.

7. Logic A premise, usually the minor premise, of an argument.

~~~~~~

thank you http://www.thefreedictionary.com