Decency, in UK the word 'indecent' is used in the sense of obscenity in statutes, relating to obscenity, conveys the Idea of offending against the recognised standards of property, Commentary on the Constitution of India, Durga Das Basu, 6th Edn., Vol. C, p. 125.
In India, the State can impose reasonable restrictions on the fundamental right to freedom of speech and expression on the ground of decency, Constitution of India, Art. 19(2).
Decency, the meaning of the term will vary according to age, culture and alike things of the audience, Rajni v. State, AIR 1958 All 360