Active.
One who works with or controls some machine or scientific apparatus.
A humorous play in dialogue and music, of more than one act.
A conclusion or judgment held with confidence, but falling short of positive knowledge.
One who supports the opposite side in a debate, discussion, struggle, or sport.
Especially fit as occurring, said, or done at the right moment.
One who takes advantage of circumstances to gain his ends.
Favorable or advantageous chance or opening.
Radically different or contrary in action or movement.
The state of being scornfully reproached or accused of evil.