| conforming with or constituting a norm or standard or level or type or social norm; not abnormal | (of a parent or child) related by blood; genetically related |
| in accordance with scientific laws | in accordance with nature; relating to or concerning nature |
| being approximately average or within certain limits in e.g. intelligence and development | existing in or produced by nature; not artificial or imitation |
| forming a right angle | existing in or in conformity with nature or the observable world; neither supernatural nor magical |
| | (of a musical note) being neither raised nor lowered by one chromatic semitone |
| | being talented through inherited qualities |
| | functioning or occurring in a normal way; lacking abnormalities or deficiencies |
| | unthinking; prompted by (or as if by) instinct |
| | free from artificiality |
| | (used especially of commodities) being unprocessed or manufactured using only simple or minimal processes |