The correct form of the word is welcome, so writing “welcome” without the hyphen it is incorrect.
The rules of the Orthographic Agreement of the Portuguese Language were implemented without obligation in 2009, but from 2016 they became mandatory.
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In this way, changes were made to the words that contained hyphen. Thus, words composed of adverbs “bem” and “mal” would only use the hyphen if the first letter of the following word was a vowel or the letter h.
However, the correct way to write welcome it is a exception in the New Orthographic Agreement of 2009.
The word welcome, in the feminine, or welcome, in the masculine, are words formed by juxtaposition. This means that a new word is formed from the combination of two or more words. Words retain their autonomy if they are merely juxtaposed.
The word welcome (o) refers to a greeting of welcome and indicates that someone is, was or will be welcomed and loved somewhere.
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