phlegmatic Look up phlegmatic at Dictionary.com
"cool, calm, self-possessed," and in a more pejorative sense, "cold, dull, apathetic," 1570s, from lit. sense "abounding in phlegm (as a bodily humor)" (mid-14c.), from O.Fr. fleumatique, from L.L. phlegmaticus, from Gk. phlegmatikos "abounding in phlegm" (see phlegm).
"A verry flewmatike man is in the body lustles, heuy and slow." [John of Trevisa, transl. of Bartholomew de Glanville's "De proprietatibus rerum," 1398]