The Collaborative International Dictionary of English v.0.48:

Subordinate \Sub*or"di*nate\, n.
   One who stands in order or rank below another; --
   distinguished from a principal. --Milton.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Subordinate \Sub*or"di*nate\, v. t. [imp. & p. p.
   Subordinated; p. pr. & vb. n. Subordinating.]
   1. To place in a lower order or class; to make or consider as
      of less value or importance; as, to subordinate one
      creature to another.
      [1913 Webster]

   2. To make subject; to subject or subdue; as, to subordinate
      the passions to reason.
      [1913 Webster] -- Sub*or"di*nate*ly, adv. --
      Sub*or"di*nate*ness, n.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Subordinate \Sub*or"di*nate\, a. [Pref. sub + L. ordinatus, p.
   p. of ordinare to set in order, to arrange. See Ordain.]
   1. Placed in a lower order, class, or rank; holding a lower
      or inferior position.
      [1913 Webster]

            The several kinds and subordinate species of each
            are easily distinguished.             --Woodward.
      [1913 Webster]

   2. Inferior in order, nature, dignity, power, importance, or
      the like.
      [1913 Webster]

            It was subordinate, not enslaved, to the
            understanding.                        --South.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dependent \De*pend"ent\, a. [L. dependens, -entis, p. pr.
   dependere. See Depend, and cf. Dependant.]
   1. Hanging down; as, a dependent bough or leaf.
      [1913 Webster]

   2. Relying on, or subject to, something else for support; not
      able to exist, or sustain itself, or to perform anything,
      without the will, power, or aid of something else; not
      self-sustaining; subordinate; -- often with on or upon;
      as, dependent on God; dependent upon friends. Opposite of
      independent. [Narrower terms: interdependent,
      mutualist, mutually beneficial; parasitic, parasitical,
      leechlike, bloodsucking; subordinate; underage;
      myrmecophilous; symbiotic] Also See: unfree.
      [1913 Webster]

            England, long dependent and degraded, was again a
            power of the first rank.              --Macaulay.
      [1913 Webster]

   3. conditional; contingent or conditioned. Opposite of
      unconditional.

   Syn: qualified.
        [WordNet 1.5]

   4. addicted to drugs.

   Syn: addicted, dependent, drug-addicted, hooked, strung-out.
        [WordNet 1.5]

   Dependent covenant or Dependent contract (Law), one not
      binding until some connecting stipulation is performed.

   Dependent variable (Math.), a varying quantity whose
      changes are arbitrary, but are regarded as produced by
      changes in another variable, which is called the
      independent variable.
      [1913 Webster]

WordNet (r) 3.0 (2006):

subordinate
    adj 1: lower in rank or importance [syn: subordinate, low-
           level] [ant: dominant]
    2: subject or submissive to authority or the control of another;
       "a subordinate kingdom" [ant: insubordinate]
    3: (of a clause) unable to stand alone syntactically as a
       complete sentence; "a subordinate (or dependent) clause
       functions as a noun or adjective or adverb within a sentence"
       [syn: dependent, subordinate] [ant: independent,
       main(a)]
    n 1: an assistant subject to the authority or control of another
         [syn: subordinate, subsidiary, underling, foot
         soldier]
    2: a word that is more specific than a given word [syn:
       hyponym, subordinate, subordinate word]
    v 1: rank or order as less important or consider of less value;
         "Art is sometimes subordinated to Science in these schools"
    2: make subordinate, dependent, or subservient; "Our wishes have
       to be subordinated to that of our ruler" [syn: subordinate,
       subdue]

Moby Thesaurus II by Grady Ward, 1.0:

125 Moby Thesaurus words for "subordinate":
   accessory, adjuvant, aide, assistant, assort, auxiliary, below,
   beneath, bolt, categorize, classify, client, cog, collate,
   collateral, common, commonality, commonalty, contributory,
   creature, demeaning, dependent, deprive of freedom, disadvantaged,
   disenfranchise, disfranchise, divide, dominate, employee, enslave,
   enthrall, feudal, feudatory, flunky, follower, gradate, grade,
   group, hanger-on, helper, hireling, hoi polloi, hold captive,
   hold down, hold in bondage, hold in captivity, hold in leash,
   hold in subjection, homager, humble, in the shade, inferior,
   infra dig, junior, keep down, keep under, lackey, lead captive,
   less, lesser, liege, liege man, lightweight, low, lower,
   lower class, lower orders, lowly, make dependent, masses, minion,
   minor, modest, myrmidon, next to, ordinary, pawn, peon, peonize,
   poor relation, rank, retainer, riddle, right-hand man, satellite,
   screen, scrub, second fiddle, second rank, second string,
   secondary, separate, serf, servant, servile, sieve, sift, size,
   slave, sort, sort out, staffer, stooge, sub, subaltern, subject,
   subjugate, subordinate to, subservient, subsidiary, supplementary,
   take captive, third rank, third string, third stringer, tributary,
   under, underling, underprivileged, understrapper, vassal,
   vassalize, vulgar, yeoman, yes-man