Dyestuff is a broad term used to describe any material used to impart color to a substance. The crossword solutions for the term dyestuff include DYE (3 letters), PIGMENT (7 letters), INDIGO (6 letters), ANIL (4 letters), HENNA (5 letters), WOAD (4 letters), eosin (5 letters), and eosine (6 letters). DYE is a soluble colorant that is applied directly to the substrate, while PIGMENT is a dry, insoluble colorant that is mixed with a binder before being applied. INDIGO is a deep blue DYE derived from plants, while ANIL is a blue-violet DYE obtained from the INDIGO plant. HENNA is a reddish-brown DYE made from the leaves of the HENNA plant, and WOAD is a blue DYE made from the leaves of the WOAD plant. Eosin is a red DYE made from coal tar, and eosine is a pink DYE made from eosin.