written (American)

[Over the top]

How the tt in written is pronounced?
I heard it like a glotal stop

[Amigos4]

How the tt in written is pronounced?
I heard it like a glotal stop

It is pronounced as a single 't'; as in 'hit', 'bit', and 'sit'.

[5jj]

The pronunciation varies from person to person and from dialect to dialect.

[Chicken Sandwich]

The best way to learn how "written" (or any word for that matter) is pronounced, is to listen for yourself. A lot of dictionaries come with a CD-ROM, which provide ample oppurtunity to listen to both the British and American pronunciation of a particular word.

[raindoctor]

Add a nasal release to Amigo4's suggestion. That's what you hear in American English.

[5jj]

Add a nasal release to Amigo4's suggestion. That's what you hear in American English.

That is true of 'written', when the /t/ can be followed directly by the nasal/n/ in some varieties of English, but it is not true when /t/ is followed by other sounds, or when a schwa (or other vowel) sound is produced between /t/ and /n/.

[raindoctor]

Well, it is a complex phonological environment.

This is what I wrote on englishforums for a similar question.

In the following cases, the first V is stressed.

1. VtVn, t is nasally released.(cf. button, mutton, glutton, Manhattan, written, beaten, Clayton, etc)
2. VntVn, t is nasally released (cf. Trenton, NJ; Scranton, NJ; Mountain View, CA; sentence, etc). The first V is nasalized. 3. Vrtn, t is nasally released (certain, Morton, hearten, Dumbarton bridge, Wharton school, Barton, etc)
4. Vltn: in some words, t is nasally released; in some others, it is not.
4a. No nasal release, instead there is a schwa between t and n in these words: Hilton, Milton, Dalton, Elton, Shelton, CT, Bolton, Dolton, IL, etc. MW transcribes Dalton with a nasal release, but when you hear the Dalton's sound file there, it is not nasally released. However, LPD transcribes with a nasal release and the sound file matches with it.
4b. Nasal release in these words: Walton (from MW), sultan, etc.

How about words like gluttony? Here, you see sonorant gemination. gluttony = glutton (pattern 1) + nee

[5jj]

What you wrote may be true some speakers of AmE, but is not true of all Americans I have met.

However, LPD transcribes with a nasal release

My 3rd edition transcribes it as: t ən

gluttony = glutton (pattern 1) + nee

Should that not be glutton + ee?