1existing in or derived from nature; not made or caused by humankind:carrots contain a natural antiseptic natural disasters such as earthquakes having had a minimum of processing or preservative treatment:natural food our nutritional products are completely natural (of fabric) having a colour characteristic of the unbleached and undyed state; off-white. 2in accordance with the nature of, or circumstances surrounding, someone or something:sharks have no natural enemies [attributive] (of a person) having an innate skill or quality:he was a natural entertainer (of a skill or quality) coming instinctively to a person; innate:Laura’s natural adaptability enabled her to settle quickly (of a person or their behaviour) relaxed and unaffected; spontaneous:he replied with just a little too much nonchalance to sound natural entirely to be expected:Ken was a natural choice for chairman [attributive] (of law or justice) felt instinctively to be morally right and fair: you might feel that holding the teacher responsible for the results contravenes natural justice 3 [attributive] (of a parent or child) related by blood: such adopted children always knew who their natural parents were
chiefly archaic (of a child) illegitimate: the Baron left a natural son by his mistress
4 Music (of a note) not sharp or flat:the bassoon plays G natural instead of A flat (of a brass instrument) having no valves and able to play only the notes of the harmonic series above a fundamental note. relating to the notes and intervals of the harmonic series. 5 Christian Theology relating to earthly human or physical nature as distinct from the spiritual or supernatural realm.
6 Bridge (of a bid) straightforwardly reflecting one’s holding of cards: his bid of one heart was natural and positiveOften contrasted with conventional or artificial.
naturally:keep walking—just act natural
1a person having an innate talent for a particular task or activity:she was a natural for television work 2 Music a sign (♮) denoting a natural note when a previous sign or the key signature would otherwise demand a sharp or a flat. any of the longer, lower keys on a keyboard instrument that are normally white. 3 [mass noun] an off-white colour: colour for the summer is defined by the trend towards naturals 4a hand of cards, throw of dice, or other result which wins immediately, in particular: a hand of two cards making 21 in the first deal in blackjack and similar games. a first throw of 7 or 11 at craps. 5 Fishing an insect or other small creature used as bait, rather than an artificial imitation.
6 archaic a person born with a learning disability.