Phlegmatic1. (a.) Not easily excited to action; cold; dull; sluggish; having the nature of phlegm; as, a phlegmatic person.
2. (a.) Abounding in phlegm; as, phlegmatic humors; a phlegmatic constitution.
3. (a.) Generating or causing phlegm.
Thesaurus Entries
Laodicean, Olympian, abeyant, aloof, ambivert, apathetic, benumbed, blah, blase, bored, calm, careless, cataleptic, catatonic, choleric, cold, comatose, composed, controlled, cool, cycloid, cyclothyme, cyclothymic, dead, debilitated, desensitized, detached, disinterested, distant, dopey, dormant, droopy, drugged, dry, dull, ectomorph, endomorph, enervated, equanimous, even-tempered, exanimate, extrovert, flat, foul, groggy, heartless, heavy, hebetudinous, heedless, hopeless, impassive, imperturbable, in a stupor, in abeyance, in suspense, inactive, inanimate, incurious, indifferent, indolent, inert, insensible, insensitive, insouciant, introvert, jaded, lackadaisical, languid, languorous, latent, leaden, lethargic, lifeless, listless, logy, lumpish, matter-of-fact, melancholic, mesomorph, mindless, moderate, moribund, nonchalant, numb, numbed, passive, philosophical, placid, pluckless, pooped, regardless, resigned, restrained, sanguine, sated, schizoid, schizothyme, sedentary, self-controlled, self-possessed, serene, slack, sleeping, sleepy, slow, sluggish, slumbering, smoldering, somnolent, soporific, spiritless, spunkless, stagnant, stagnating, standing, static, stoic, stoical, stolid, stultified, stupefied, supine, suspended, syntone, tame, temperate, torpid, tranquil, unaffected, unanimated, unaroused, uncaring, unconcerned, undemonstrative, undisturbed, unemotional, unenthusiastic, unfeeling, uninquiring, uninterested, uninvolved, unmindful, unmoved, unperturbed, unresponsive, unruffled, vegetable, vegetative, wan, weary, withdrawn, world-weary