Main entry: normal
Definition: conforming with or constituting a norm or standard or level or type or social norm; not abnormal
Usage: serve wine at normal room temperature; normal diplomatic relations; normal working hours; normal word order; normal curiosity; the normal course of events
Definition: not normal; not typical or usual or regular or conforming to a norm
Antonyms: unnatural
Definition: not in accordance with or determined by nature; contrary to nature
Antonyms: unreal, artificial
Definition: contrived by art rather than nature
Antonyms: supernatural
Definition: not existing in nature or subject to explanation according to natural laws; not physical or material
Antonyms: flat
Definition: (of a musical note) lowered in pitch by one chromatic semitone
Antonyms: sharp
Definition: (of a musical note) raised in pitch by one chromatic semitone
Antonyms: irregular
Definition: contrary to rule or accepted order or general practice
Antonyms: irregular
Definition: (of solids) not having clear dimensions that can be measured; volume must be determined with the principle of liquid displacement
Antonyms: irregular
Definition: (used of the military) not belonging to or engaged in by regular army forces
Definition: not representative of a group, class, or type
Main entry: normal
Definition: being approximately average or within certain limits in e.g. intelligence and development
Usage: a perfectly normal child; of normal intelligence; the most normal person I've ever met
Antonyms: abnormal
Definition: departing from the normal in e.g. intelligence and development
Main entry: normal
Definition: in accordance with scientific laws
Antonyms: paranormal
Definition: not in accordance with scientific laws
Main entry: normal
Definition: forming a right angle
Antonyms: parallel
Definition: being everywhere equidistant and not intersecting
Antonyms: oblique
Definition: slanting or inclined in direction or course or position--neither parallel nor perpendicular nor right-angled