im·pas·sive
[im-pas-iv] Show IPA
adjective
1. without emotion; apathetic; unmoved.
2. calm; serene.
3. unconscious; insensible.
4. not subject to suffering.
tac·i·turn
[tas-i-turn] Show IPA
adjective
1. inclined to silence; reserved in speech; reluctant to join in conversation.
2. dour, stern, and silent in expression and manner.
Word courtesy or E L James and her most mysteriously yummy and equally frightening Mr. Grey.