3 Hausa language «Approximately 43 million speakers. Hausa is one of Africa's largest spoken languages after Arabic, French, English, Portuguese, Swahili.»
4 Wolof language «Wolof is a language of Senegal, The Gambia, and Mauritania, and the native language of the Wolof people. Like the neighbouring languages Serer and Fula, it belongs to the Senegambian branch of the Niger–Congo language family. Unlike most other languages of Sub-Saharan Africa, Wolof is not a tonal language.»
5 Russian
6 German
7 Yiddish language «Yiddish is a High German language of Ashkenazi Jewish origin, spoken in many parts of the world. It developed as a fusion of Hebrew and Aramaic into German dialects with the infusion of Slavic and traces of Romance languages. It is written in the Hebrew alphabet.»
8 Hebrew language «Hebrew is a West Semitic language of the Afroasiatic language family. Culturally, it is considered by Jews and other ethnic or religious groups as the language of the Jewish people, although other Jewish languages had originated among diaspora Jews, and the Hebrew language was also used by non-Jewish groups, such as the ethnically related Samaritans.»
9 Arabic language «Arabic languages are Central Semitic languages, most closely related to Hebrew, Aramaic, Ugaritic and Phoenician.
The spoken Arabic varieties are spoken in a wide arc of territory stretching across the Middle East and North Africa.»
10 Pashto language «Pashto, also known as Afghani. Spoken in South-Central Asia, Afghanistan, Pakistan. Pashto is a member of the Eastern Iranian languages group.»
11 Persian language (aka Farsi) «Persian is an Iranian language within the Indo-Iranian branch of the Indo-European languages. It is primarily spoken in Iran, Afghanistan (as Dari), Tajikistan (as Tajik).»
12 Chinese
13 Italian
14 Turkish
15 Indonesian language «Indonesian is the official language of Indonesia. (islands between Australia and Vietnam.) 238M speakers»
16 Dutch
17 Xhosa language «Xhosa is one of the official languages of South Africa. Xhosa is spoken by approximately 7.9 million people, or about 18% of the South African population. Like most Bantu languages, Xhosa is a tonal language, that is, the same sequence of consonants and vowels can have different meanings when said with a rising or falling or high or low intonation. One of the most distinctive features of the language is the prominence of click consonants; the word “Xhosa” begins with a click.»
18 Swahili language «The Swahili language or Kiswahili is a Bantu language spoken in parts of Africa. It is used as a lingua franca in much of East Africa, meaning the total number of speakers exceeds 60 million. Swahili serves as a national, or official language, of five nations: Tanzania, Kenya, Uganda, the Comoros and the Democratic Republic of the Congo.»
19 Hindi «Hindi is one of the official languages of the Republic of India. (the other is English) Hindi is the native language of “a relatively small number of speakers” in Delhi, Haryana, Western Uttar Pradesh, northeastern Madhya Pradesh, and parts of eastern Rajasthan.»
20 Ojibwe language «one of language used by aboriginal peoples in Canada. About 50k speakers.»