Complement- [n. kom-pluh-muhnt; v. kom-pluh-ment]
To go perfectly with
Noun
Middle English
Sentance: That scarf really complements your eyes.


Discreet-[dih-skreet]
 cautious
Adjective
Middle English
Sentance: Shelly discreetly moved the cigarettes behind the lamp because she did not want the ladies to know that she smoked.

Fastidious- [fa-stid-ee-uhs, fuh-]
working quickly
Adjective
Late Middle English
Sentance: Every night I do my homework fastidiously, then get ready for dance class.


Flout- [flout]
to show off
Verb
Middle English
Sentance: Caroline's only flaw is that she loves to flout all of her designer clothes to everyone at school.


Heinous-[hey-nuhs]
 wicked
Adjective
Middle English
Sentance: He was the last one the police would suspect to comit such a heinous crime.


Implement-[n. im-pluh-muhnt; v. im-pluh-ment, -muhnt] 
 to put into effect
Noun
Late Middle English
Sentance: Congress will implement the new law starting next week.


Impromptu- [im-promp-too, -tyoo]
not rehearsed
Adjective
French
Sentance: I was extremely suprised when I found out the speech was impromptu because the speaker was so confident and calm when she spoke.

Inference- a conclusion

Obtrusive-[uhb-troo-siv]
 overly obvious
Adjective
Latin
Sentance: It was obtrusive that the free laptop website was a fraud because it asked me for my credit card number.