A sudden uncontrollable fear or anxiety, often causing wildly unthinking behavior.

Swelling of the optic nerve head due to increased intracranial pressure.

A river in South America, flowing through Brazil, Paraguay, and Argentina.

A major river in South America that flows through Brazil, Paraguay, and Argentina.

A portion or segment of something larger.

To take a share or participate in something.

Having been separated or divided into pieces.

A person who takes part in something.

The action of leaving or separating from someone or something.

A member of an armed group formed to fight secretly against an occupying force.

Relating to or characteristic of a father.

The state of being a father.

The capacity to accept or tolerate delay, trouble, or suffering without getting angry or upset.

The male head of a family or tribe.

A writing instrument used to apply ink to a surface, usually paper.

A strong or habitual liking for something or a tendency to do something.

A writing instrument consisting of a thin stick of graphite or a similar substance enclosed in a wooden or plastic casing.

The male reproductive organ in humans and some animals.

A long, tapering flag used for signaling or decoration.

To travel or wander, especially in foreign lands.