The Collaborative International Dictionary
Sallowest
Sallow \Sal"low\, a. [Compar. Sallower; superl. Sallowest.]
[AS. salu; akin to D. zaluw, OHG. salo, Icel. s["o]lr
yellow.]
Having a yellowish color; of a pale, sickly color, tinged
with yellow; as, a sallow skin.
--Shak.
Wiktionary
sallowest
a. (en-superlative of: sallow)