Taybah
Taybah means 'good', 'pure', or 'pleasant' in Arabic; it is the feminine form of an adjective from the root t-y-b associated with goodness and wholesomeness.
The exact proper name Taybah does not appear as a personal name in the Qur'an, but words from the root t-y-b (such as tayyibat) appear in the Qur'an in contexts referring to good or wholesome things.
Yes. Taybah/Tayyibah appears as an epithet in historical and geographic usage—for example, Madinah is often called al-Tayyibah; the term itself is classical Arabic attested in lexica and literature.
Yes. Because the name denotes a positive moral quality and is rooted in Arabic vocabulary, it is generally considered appropriate for use in Muslim naming traditions.
Regional variants include Tayyibah, Tayyiba, Tayba, and Taiba. Differences reflect transliteration preferences and local pronunciation.