naturalness

n. quality of being natural; state of accordant with nature

In particle physics, the assumption of naturalness means that unless a more detailed explanation exists, all conceivable terms in the effective action that preserve the required symmetries should appear in this effective action with natural coefficients. Natural coefficients have the form where is the dimension of the operator, is the cutoff scale - energy, above which the effective field theory breaks down - and is a "random" number comparable to one.
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Noun
1. the quality of being natural or based on natural principles; "he accepted the naturalness of death"; "the spontaneous naturalness of his manner"
(antonym) unnaturalness
(hypernym) quality
(hyponym) unaffectedness
(attribute) natural
2. the quality of innocent naivete
(synonym) artlessness, innocence, ingenuousness
(hypernym) naivete, naivety, naiveness

(n.)
The state or quality of being natural; conformity to nature.
  

n.
برجستگي, ہمواري, بے ساختگي, بے تکلفي, قدرتي پن