know and comprehend the nature or meaning of; "She did not understand her husband"; "I understand what she means"
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"
believe to be the case; "I understand you have no previous experience?"
make sense of a language; "She understands French"; "Can you read Greek?"
the property of lacking physical or mental strength; liability to failure under pressure or stress or strain; "his weakness increased as he became older"; "the weakness of the span was overlooked until it collapsed"
a penchant for something even though it might not be good for you; "he has a weakness for chocolate"
the condition of being financially weak; "the weakness of the dollar against the yen"
harsh or severe speech or behavior; "men associate the roughness of nonstandard working-class speech with masculinity"; "the roughness of her voice was a signal to keep quiet"
a texture of a surface or edge that is not smooth but is irregular and uneven
expectorated matter; saliva mixed with discharges from the respiratory passages; in ancient and medieval physiology it was believed to cause sluggishness