This is the 10933rd most frequent Spanish word.
dices
"Dice" means "you say" or "you tell" (second-person singular present tense of "decir").
Here, 'dices' implies the action of speaking performed by the person being addressed.
Cada vez que dices algo, me sorprendes.
Every time you say something, you surprise me.
In this sentence, 'dices' is used to express a conditional action, as part of the if-clause.
Si dices la verdad, te creeré.
If you tell the truth, I will believe you.
The word 'dices' is used in its second person singular present indicative form to ask for someone's opinion.