The Collaborative International Dictionary of English v.0.48:

Freight \Freight\, v. t. [imp. & p. p. Freighted; p. pr. & vb.
   n. Freighting.] [Cf. F. freter.]
   To load with goods, as a ship, or vehicle of any kind, for
   transporting them from one place to another; to furnish with
   freight; as, to freight a ship; to freight a car.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

25 Moby Thesaurus words for "freighted":
   burdened, charged, cumbered, encumbered, fraught, full-charged,
   full-fraught, hampered, heavy-laden, laden, loaded, oppressed,
   overburdened, overcharged, overfraught, overfreighted, overladen,
   overloaded, overtaxed, overweighted, saddled, supercharged, taxed,
   weighted, weighted down