The word often is often pronounced with a t. The below citation from Dictionary.com explains:
“HOW TO PRONOUNCE OFTEN
Often was pronounced with a t -sound until the 17th century, when a pronunciation without the [t] came to predominate in the speech of the educated, in both North America and Great Britain, and the earlier pronunciation fell into disfavor. Common use of a spelling pronunciation has since restored the [t] for many speakers, and today [aw-fuhn] and [awf-tuhn] [or [of-uhn] and [of-tuhn] ] exist side by side. Although it is still sometimes criticized, often with a [t] is now so widely heard from educated speakers that it has become fully standard once again.”
Really well done. An example of how people cannot be faulted for either pronunciation as long as it is not at odds completely with common usage, such as refusing to meld the -tion ending as -shun (Peter Sellers playing a ‘working class bloke’ who represented the Communist Party pronounced ‘situation’ as ‘sit-ou-a-ti-own’).
The upper class note reminds me of the -g on -ing. The upper classes in England ‘left off’ the -g and in the U.S. that is now regarded as uncouth (‘couth’ being the old past participle of ‘know’, thus ‘unknown’, a stranger).