Quickwitted.

A child's game in which players throw a ball or other similar object so as to prevent a selected player from catching it. When the selected player catches the thrown object, he or she trades places with whoever threw it in a manner that allowed it to be caught.

A person who lives in a lighthouse and tends the light together with its optics and mechanisms.

A surname from Irish / A unisex given name transferred from the surname.

A male given name from Kalenjin / A surname from Kalenjin or transferred from the given name. from the given name.

(idiomatic) To remain calm, reasonable, level-headed, especially in a situation likely to cause distress.

To stay away from (a place or condition). / To restrain someone or something from entering (a place or condition).

(nautical) a strake, or small keel or blister, running along much of the length of the hull. It is used to reduce the hull's tendency to roll. They are typically fitted one on each side, low down on the side of the hull, so as not to increase the draft of the vessel. In battleships they were often quite large and used as part of the torpedo protection system.

To monitor; to track or record; to understand or follow.

(idiomatic) To maintain one's concentration fixed on one important theme.