[1] : The Collaborative International Dictionary of English v.0.48

understand \un`derstand"\ u^n`d~ersta^nd", v. t. imp.
    p. p. understood u^n`d~erstoo^d", and archaic
   understanded; p. pr.  vb. n. understanding. oe.
   understanden, as. understandan, literally, to stand under;
   cf. as. forstandan to understand, g. verstehen. the
   development of sense is not clear. see under, and stand.
   1. to have just and adequate ideas of; to apprehended the
      meaning or intention of; to have knowledge of; to
      comprehend; to know; as, to understand a problem in
      euclid; to understand a proposition or a declaration; the
      court understands the advocate or his argument; to
      understand the sacred oracles; to understand a nod or a
      wink.
      1913 webster

            speaketh i. e., speak thou so plain at this time,
            i you pray,
            that we may understande what ye say.  --chaucer.
      1913 webster

            i understand not what you mean by this. --shak.
      1913 webster

            understood not all was but a show.    --milton.
      1913 webster

            a tongue not understanded of the people. --bk. of
                                                  com. prayer.
      1913 webster

   2. to be apprised, or have information, of; to learn; to be
      informed of; to hear; as, i understand that congress has
      passed the bill.
      1913 webster

   3. to recognize or hold as being or signifying; to suppose to
      mean; to interpret; to explain.
      1913 webster

            the most learned interpreters understood the words
            of sin, and not of abel.              --locke.
      1913 webster

   4. to mean without expressing; to imply tacitly; to take for
      granted; to assume.
      1913 webster

            war, then, war,
            open or understood, must be resolved. --milton.
      1913 webster

   5. to stand under; to support. jocose  r. --shak.
      1913 webster

   to give one to understand, to cause one to know.

   to make one's self understood, to make one's meaning clear.
      1913 webster
see also:
understood understanded understanding under stand to give one to understand 
to make one's self understood 

[2] : The Collaborative International Dictionary of English v.0.48

understand \un`derstand"\, v. i.
   1. to have the use of the intellectual faculties; to be an
      intelligent being.
      1913 webster

            imparadised in you, in whom alone
            i understand, and grow, and see.      --donne.
      1913 webster

   2. to be informed; to have or receive knowledge.
      1913 webster

            i came to jerusalem, and understood of the evil that
            eliashib did for tobiah.              --neh. xiii.
                                                  7.
      1913 webster

[3] : WordNet (r) 2.0

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" syn: realize, realise, see
     3: make sense of a language; "she understands french"; "can you
        read greek?" syn: read, interpret, translate
     4: believe to be the case; "i understand you have no previous
        experience?" syn: infer
     5: be understanding of; "you don't need to explain--i
        understand" syn: sympathize, sympathise, empathize,
         empathise
     also: understood
see also:
realize realise see read interpret translate 
infer sympathize sympathise empathize empathise 
understood 

[4] : Moby Thesaurus II by Grady Ward, 1.0

120 moby thesaurus words for "understand":
   absorb, accept, agree, allow, appreciate, apprehend, arrange,
   assimilate, assume, be acquainted with, be afraid, be apprised of,
   be aware of, be cognizant of, be conscious of, be conversant with,
   be informed, be with one, believe, catch, catch on, catch on to,
   cognize, comprehend, conceit, conceive, conceptualize, conclude,
   conjecture, consider, construe, covenant, daresay, deduce, deem,
   define, describe, diagnose, dig, digest, discern, divine, dream,
   empathize with, expect, fancy, fathom, feel, follow, forgive,
   gather, get, get hold of, get it, get the drift, get the idea,
   get the picture, get wind of, grant, grasp, have,
   have information about, have it taped, have knowledge of, hear of,
   imagine, infer, interpret, ken, know, learn, let, let be, make out,
   master, opine, penetrate, perceive, perfume, possess, prefigure,
   prehend, presume, presuppose, presurmise, provisionally accept,
   read, read into, realize, reckon, recognize, repute, savvy, say,
   see, seize, seize the meaning, sense, suppose, surmise, suspect,
   sympathize with, take, take cognizance of, take for,
   take for granted, take in, take it, take it that, take to be,
   take to mean, think, tolerate, tumble to, twig, understand by,
   view, wit, wot, wot of

Understand >> U Words
Understand, definition of term: Understand
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