In the English language, negro, or negress for females, is a term historically used to denote persons considered to be of Black African heritage. The word negro means the color black in both Spanish and in Portuguese (from Latin niger), where English took it from. The term can be construed as offensive, inoffensive, or completely neutral, largely depending on the region or country where it is used, as well as the context in which it is applied. It has various equivalents in other languages of Europe.
Around 1442, the Portuguese first arrived in Southern Africa while trying to find a sea route to India. The term negro, literally meaning 'black', was used by the Spanish and Portuguese as a simple description to refer to the Bantu peoples that they encountered. Negro denotes 'black' in Spanish and Portuguese, derived from the Latin word niger, meaning 'black', which itself is probably from a Proto-Indo-European root *nekw-, "to be dark", akin to *nokw-, 'night'. Negro was also used for the peoples of West Africa in old maps labelled Negroland, an area stretching along the Niger River.
From the 18th century to the late 1960s, negro (later capitalized) was considered to be the proper English-language term for people of black African origin. According to Oxford Dictionaries, use of the word "now seems out of date or even offensive in both British and US English".
A specifically female form of the word, negress (sometimes capitalized), was occasionally used. However, like Jewess, it has all but completely fallen out of use.
Negroid was used within physical anthropology to denote one of the three purported races of humankind, alongside Caucasoid and Mongoloid. The suffix "-oid" means "similar to". Negroid as a noun was used to designate a wider or more generalized category than Negro; as an adjective, it qualified a noun as in, for example, "negroid features".
Negro superseded colored as the most polite word for African Americans at a time when black was considered more offensive.