Dirty. Rub the tips of the 1st and 2nd fingers with the tip of the thumb, exactly as in Powder, and add Bad.
Fr. sal; Ger. schmutzig.
Disappear. Hold out the flat left, palm in, then shoot compressed right, points first, over and down; then rub upper edge of left with palm tips of right to mean wiped out.
Disappear. Look around and sign See, Not. Sometimes use Hide.
Fr. disparaître; Ger. verschwinden.
Disbelief. Sign That, True, I think, No.
Fr. l’incrédulité; Ger. der Unglaube.
Disciple. See Learner.
Discouraged. See Sorrow.