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Stoic

Unaffected by emotions or spin

Nefarious

Wicked or criminal

Languid

Slow, relaxed, lacking energy

Onerous

Burdensome, difficult

Alleviate

To make something less painful, or difficult

Sanguine

Optimistic or positive

Ubiquitous

Present everywhere at the same time

Ephemeral

Lasting a very short time

Tenacious

Persistent and determined, not giving up easily

Voracious

Having a huge appetite for food, knowledge or experience

Benevolent

Kind and generous, wanting to do good for others