TRANSGRESSION

Upon seeing Christian juicing blood oranges, his landlady acted as if he had committed a transgression, while it was a mere solecism.

Apparently, juicing blood oranges is not the done thing in Tunisia.

DEF:
n.

1. A violation of a law, command, or duty: "The same transgressions should be visited with equal severity on both man and woman" (Elizabeth Cady Stanton). See Synonyms at breach.
2. The exceeding of due bounds or limits.
3. A relative rise in sea level resulting in deposition of marine strata over terrestrial strata.

Origin:
1400–50; late ME <>trānsgressiōn- (s. of trānsgressiō) a stepping across.
(American Heritage)

Sorry for the tardy postings. A two week break makes on lazy.