STOLID
impassive, stolid
(adjective) having or revealing little emotion or sensibility; not easily aroused or excited; “her impassive remoteness”; “he remained impassive, showing neither interest in nor concern for our plight”- Nordhoff & Hall; “a silent stolid creature who took it all as a matter of course”-Virginia Woolf; “her face showed nothing but stolid indifference”
Source: WordNet® 3.1
Etymology
Adjective
stolid (comparative stolider, superlative stolidest)
Having or revealing little emotion or sensibility; dully or heavily stupid.
Anagrams
• lotids
Source: Wiktionary
Stol"id, a. Etym: [L. stolidus.]
Definition: Hopelessly insensible or stupid; not easily aroused or excited;
dull; impassive; foolish.
Source: Webster’s Unabridged Dictionary 1913 Edition