casual
Sure thing! Another informal word for ask is "hit me up".
A motor (scooter).
phagocytocsis
Chit-chat.
Power that is not legitimized through a written document but is agreed upon in an informal manner.
No. Fo is not an acceptable Scrabble word.
Another word for "minus" is "negative." It can also be referred to as "subtracted" in mathematical contexts. In informal language, "less" is often used as a synonym.
another word for mother is mater (pronounced "may-ter") it is an informal use of the Latin word for mother. The opposite to day is "night"
annoyance, frustration, crossness, impatience, exasperation, anger, irascibility, touchiness, testiness (informal) antonym: calmnessnuisance, pain, pest (informal), bother, bane, irritantinflammation, soreness, tenderness, itchiness, prickliness (informal), rashMicrosoft Works Word Processor 2007 version
canidé, toutou, [informal] cabot, [informal] clebs, [informal] clébard. I don't know which one kids use, but it will probably be one of the informals.
Our gathering will be informal.
The Official Scrabble Players Dictionary does not list fo as a legal Scrabble word.