Sapling Logo

“Unauthorized” or “Unauthorised”


Unauthorized and unauthorised are both English terms.


Unauthorized is predominantly used in 🇺🇸 American (US) English (en-US) while unauthorised is predominantly used in 🇬🇧 British English (used in UK/AU/NZ) (en-GB).

In terms of actual appearance and usage, here's a breakdown by country, with usage level out of 100 (if available) 👇:

Term US UK India Philippines Canada Australia Liberia Ireland New Zealand Jamaica Trinidad & Tobago Guyana
unauthorized 98 35 56 97 95 40 0 48 53 100 83 0
unauthorised 2 65 44 3 5 60 0 52 47 0 17 0

  • In the United States, there is a preference for "unauthorized" over "unauthorised" (98 to 2).
  • In the United Kingdom, there is a 65 to 35 preference for "unauthorised" over "unauthorized".
  • In India, there is a preference for "unauthorized" over "unauthorised" (56 to 44).
  • In the Philippines, there is a preference for "unauthorized" over "unauthorised" (97 to 3).
  • In Canada, there is a preference for "unauthorized" over "unauthorised" (95 to 5).
  • In Australia, there is a 60 to 40 preference for "unauthorised" over "unauthorized".
  • In Liberia, there is not enough data to determine a preference between "unauthorized" and "unauthorised".
  • In Ireland, there is a 52 to 48 preference for "unauthorised" over "unauthorized".
  • In New Zealand, there is a preference for "unauthorized" over "unauthorised" (53 to 47).
  • In Jamaica, there is a preference for "unauthorized" over "unauthorised" (100 to 0).
  • In Trinidad & Tobago, there is a preference for "unauthorized" over "unauthorised" (83 to 17).
  • In Guyana, there is not enough data to determine a preference between "unauthorized" and "unauthorised".

Below, we provide some examples of when to use unauthorized or unauthorised with sample sentences.


📈 See Trends

Looking for a tool that handles this for you wherever you write?

Get Sapling

Examples in Context

Examples of “unauthorized”

  • malware written to both issue unauthorized SWIFT messages and to conceal
  • an outlawed organization and the unauthorized possession of guns and fake
  • access via a backdoor, permitting unauthorized access to, for example, steal
  • alleged that Awan had had unauthorized access to classified government data,
  • the lower misdemeanor option of unauthorized access to a computer.
  • to report attempts to bring unauthorized vehicles in for inspection, and
  • process is documented on the unauthorized Critical Times - Fishbone's Hen
  • lost positions for his unsuccessful, unauthorized sales.
  • down and sometimes outright banning unauthorized export of consumer goods through
  • released on CD, but several unauthorized versions have (Rhino Entertainment currently

Examples of “unauthorised”

  • CONFIDENTIAL: information and material the unauthorised disclosure of which could harm
  • they had to resort to unauthorised means, as indeed anatomists sometimes
  • for taking part in an unauthorised demonstration, claiming she was found
  • The Clause 38 states that unauthorised access to the Central Identities
  • a report was presented outlining unauthorised branches built by Raby, and
  • the aim of spreading terror, unauthorised use and theft of ammunition
  • Kokiri attempted to arrange an unauthorised overseas loan for Māori businesses.
  • Jimmy Cliff: An Unauthorised Biography (2011)
  • Tamper-evident, making unauthorised access to a protected object
  • of deaths at sea, and unauthorised boat arrivals.

(Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.)

Too Much to Remember?

Install Sapling