In the words themselves, you don't. In Latin pronunciation keys, you use apostrophes (sort of) before the syllable. In the most stressed syllable, you use one above, in a less-stressed syllable, you use one lower like a comma.
E.g. "pronunciation": prǝ,nǝnsē'ā sh ǝn
Stress is on the first syllable.
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primary stress in camera
The primary stress in English words is typically placed on the syllable that is pronounced with the most emphasis or force. This stress can often change the meaning of a word. For example, in the word "record," the stress is placed on the first syllable when it is used as a noun ("RE-cord"), but on the second syllable when used as a verb ("re-CORD").
Mark W. Lencho has written: 'A grid-bases theory of stress in English'
fi-nesse stress mark after the second syllable
there is just one mark of stress which is : '
A stress mark or accent mark is used to show the part of a certain word that needs to be given a stressed or accented sound when spoken. It is found most often in words of other languages.
The stress mark on 'comb' over the O.
Primary stress is where the word has its biggest concentration of sound. It is marked by an apostrophe placed at the beginning of the stressed syllable, and the apostrophe MUST be up-placed. Secondary stress is where the word has any sort of stress, yet it is not as relevant as the primary stress; the apostrophe is placed in the beginning of the stress syllable, but it MUST be down-placed. For example: in the word vaccination, it should be like this: [ˌvæk-sǝ-'nei-ʃǝn]. Where the "va" has the secondary stress, and the "na" has the primary stress.
Some compound words with lamp, script, and mark including watermark, lamplighter, and postscript. There are many words in the English language that are compound words that include words like lamp, script, and mark.
In English, the stress mark (also known as the accent mark or accent symbol) is not commonly used. However, in other languages like Spanish or French, the stress mark is typically placed above the vowel that is stressed. The specific position may vary depending on the language and its conventions.