Source : Webster's Revised Unabridged Dictionary (1913)

Lubberly \Lub"ber*ly\, a.
   Like a lubber; clumsy.

         A great lubberly boy.                    --Shak.

Lubberly \Lub"ber*ly\, adv.
   Clumsily; awkwardly. --Dryden.

Source : WordNet®

lubberly
     adj 1: clumsy and unskilled; "a big stupid lubberly fellow"
     2: inexperienced in seamanship; "of all landlubbers the most
        lubberly" [syn: {landlubberly}]