understand (v.)

1.know and comprehend the nature or meaning of"She did not understand her husband" "I understand what she means"

2.perceive (an idea or situation) mentally"Now I see!" "I just can't see your point" "Does she realize how important this decision is?" "I don't understand the idea"

3.believe to be the case"I understand you have no previous experience?"

4.make sense of a language"She understands French" "Can you read Greek?"

5.be understanding of"You don't need to explain--I understand!"

understood (adj.)

1.indicated by necessary connotation though not expressed directly"gave silent consent" "a tacit agreement" "the understood provisos of a custody agreement"

2.fully apprehended as to purport or meaning or explanation"the understood conditions of troop withdrawal were clear"