A metaphor for slowness is a figure of speech that compares something slow to something else. The three crossword solutions for this term are GLACIER (7 letters), MOLASSES (8 letters), and SNAIL (5 letters). A GLACIER is a large mass of ice that moves slowly over land, while MOLASSES is a thick, syrupy substance that moves slowly when poured. Finally, a SNAIL is an animal that moves very slowly. All three of these items can be used to represent slowness in a metaphorical sense.