A verb meaning 'to influence' or 'cause change on something' . Affect is usually confused with the word effect
1. Twinkies, Ho-hos and ding-dongs will affect your heart in a a negative way
2. Not protecting your computer with an anti-virus may affect its performance due to the possible presence of many a harmful virii.
To deeply feel something when something is said to you.
v. Yo, that affects me, you know what I'm sayin'?