Njema Williams is 6'.
Siku njema or kutwa njema, nice day (with you and your understood). These are very common parting words, varying with the time of day: siku njema, have a nice day; kutwa njema, nice day; asubuhi njema, nice morning; jioni njema, nice evening; uskiu mwema, nice night (like Good Night upon parting or closing a telephone conversation on text message).
Siku njema. "Nice day." with no verb. This is an extremely common expression among Swahili-speakers, as are usiku mwema(good or nice night), asubuhi njema (nice morning), mchana mwema (nice day or afternoon or rest of the say), kutwa njema (nice day). Kutwa njema has the same meaning as siku njema and is almost as commonly used. These are all said on departing or saying good-bye; they're not greetings.
"Njema" in Swahili means "good" or "well-being." It is often used to express positive sentiments or to inquire about someone's welfare.
Bahati njema
Afya njema
Good Luck
Sabato Njema
Good afternoon in Swahili is "lioni njema."
Siku njema kila mtu
One way to say Merry Christmas in Swahili is "Kuwa na Krismasi njema."
Bahati njema! http://www.omniglot.com/language/phrases/swahili.php