Source : Webster's Revised Unabridged Dictionary (1913)

Unfinished \Un*fin"ished\, a.
   Not finished, not brought to an end; imperfect; incomplete;
   left in the rough; wanting the last hand or touch; as, an
   unfinished house; an unfinished picture; an unfinished iron
   casting.

Source : WordNet®

unfinished
     adj 1: not brought to the desired final state [ant: {finished}]
     2: not brought to an end or conclusion; "unfinished business";
        "the building is still unfinished" [ant: {finished}]
     3: lacking a surface finish such as paint; "bare wood";
        "unfinished furniture" [syn: {bare}]