burdenous

From burden +‎ -ous.

burdenous (comparative more burdenous, superlative most burdenous)

1. (obsolete) Heavy; oppressive.
   • 1590, Edmund Spenser, “Book BUT STILL THE TYRANT STERNELY AT HIM LAYD, / AND DID HIS YRON AXE SO NIMBLY WIELD, / THAT MANY WOUNDS INTO HIS FLESH IT MADE, / AND WITH HIS BURDENOUS BLOWES HIM SORE DID OUERLADE., Canto V”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, →OCLC, page 12:

• boundures