Definitely a defined definition

Let me tell ya, definitions are important!!

"She defiantly went to the party."

is way different than 

"She definitely went to the party."

That is when we use the good ol' reliable dictionary. 

 This is also very important when defining a word within an essay. Like for example, with an audience, the actual definition of a word can hit home in a way that the word being used wrong wouldn't. 

An example I researched was the definition of integrity. 

in·teg·ri·ty

inˈteɡrədē/

noun

1. 1.

   the quality of being honest and having strong moral principles; moral uprightness.

   "he is known to be a man of integrity"

   synonyms:

   honesty, probity, rectitude, honor, good character, principle(s), ethics,morals, righteousness, morality, virtue, decency, fairness,scrupulousness, sincerity, truthfulness, trustworthiness "I never doubted his integrity"
2. 2.

   the state of being whole and undivided.

   "upholding territorial integrity and national sovereignty"

   synonyms:

   unity, unification, coherence, cohesion, togetherness, solidarity "the integrity of the federation"

where did I find that?