say it: uhn-dur-STAND
understand is a verb meaning "know and comprehend the nature or meaning of". It carries 5 recorded senses.
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”
be understanding of
“You don't need to explain--I understand!”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for understand come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.