Yo entiendo. (I understand)
No enteindo. (I don't understand)
Entiendes in English is: you understand.
The actual spelling is ¿Me entiendes?Means: Do you understand (me)? Entiendes is the word understand.
"Por fin me entiendes", or "Finalmente me entiendes". Often expressed in the past tense, as in "Por fin me entendiste".
(Tu) Entiendes
'Entiendes' = 'you understand' (as statement or question)
No entiendes esto?
"Pero si tú entiendes" is a Spanish phrase that translates to "But if you understand" in English. It is often used to express a conditional statement or to emphasize a contrast in a conversation.
"You don't understand very well."
¿Le entiende / entienden / entiendes / entendéisal español?
Entiendes, Victoria? = Got it (i.e. understand), Victoria?
You can use either the word "Entiendes?" or you can say "Comprendes?"
Pero, entiendes lo que dice ella?