Material
commandeer - correct answer ✔✔ officially take control
intramural - correct answer ✔✔ within an institution
centennial - correct answer ✔✔ a hundredth anniversary
ad infinitum - correct answer ✔✔ again and again forever
infer - correct answer ✔✔ conclude from evidence
placate - correct answer ✔✔ to appease; to soothe; to pacify
derision - correct answer ✔✔ ridicule; mockery
vivacious - correct answer ✔✔ full of life; fun; lively; animated
procure - correct answer ✔✔ to acquire; to obtain
retort - correct answer ✔✔ a quick, clever reply
vitality - correct answer ✔✔ strength, energy
videlicet (viz.) - correct answer ✔✔ namely