The ninety-nine names of God in everyday speech
A theological tradition that surfaces routinely in ordinary conversation.
Islamic tradition holds that God has ninety-nine names — al-asmaa' al-Husnaa الأسماء الحسنى, "the most beautiful names." A few of these are very widely known and appear in daily speech; most appear in liturgical contexts; some appear mainly in scholarly or devotional settings. Christian Arabs use a subset of the same vocabulary because the names predate the Islamic-Christian split as Arabic religious vocabulary.
The tradition
The ninety-nine names appear in the Quran scattered across many verses. The number 99 itself comes from a hadith, and there are several different lists in different sources — the contents are not entirely fixed. The two best-known lists differ on a handful of names; the canonical "list of 99" you see on posters and in apps is one well-circulated version, not a single official document.
The first name is technically allaah itself, which by standard reckoning is treated as the proper name and the other 99 are attributes. Some lists count allaah as the first of the 99; some count 99 attributes plus the name. This is a distinction theologians care about and most speakers do not.
Names that appear in daily speech
Personal names with Abd-
One of the most productive uses of the names of God in everyday life is in personal names formed with the prefix ʿabd (عبد, "servant of"). The form is ʿabd + a name of God in the genitive form. The name is typically spelled with al- attached to the second part in both Arabic and English transliteration.
Note that names like Karim, Rahman, Aziz, Latif, Hamid, Majid, Wahid can appear on their own as personal names without the ʿabd prefix. In strict theological usage, the standalone form is the name of God; in practice, used as a personal name, it is just a name. Some scholars have historically argued that one should not use these names without ʿabd, but this is a minority position and contemporary practice is unbothered by it.
Karim alone is a common name. Karima is its feminine form. Same for Latif/Latifa, Hamid/Hamida, Majid/Majida, Aziz/Aziza.
Christian use
Arabic-speaking Christians use allaah as the standard word for God — it is not specifically Islamic; it predates Islam as an Arabic word. Christian Arabs use a subset of the names: ar-raHiim, al-kariim, al-ʿaZiim, al-qudduus ("the holy") all appear in Arabic Christian liturgy. The full list of 99 is specifically Islamic; the underlying vocabulary is shared.
Christian Arab personal names rarely use the ʿabd + divine-name pattern, with the major exception of ʿabd al-masiiH ("servant of the Messiah"), a Christian Arab name.
Why this matters
If you are working with Arabic-language material, recognizing these names is part of basic literacy. They appear in literature, in news, in song lyrics, on signs over storefronts, in business names, and in personal names you will be expected to pronounce correctly. The names are not treated as obscure technical theology; they are part of the vocabulary.