Some Swahili I learned (don't hold me to the spelling)

man riding a red motorcycle -- mwana mume ame panda piki piki neokundu
thumbs up -- dole
pound it -- nepetano
Hello -- jambo
Hello (respectful, formal) -- shikamoo
goodbye -- kwaheri
How are you -- habari
(very) good - nzuri (sana)
thank you -- asante
sorry -- pole
slowly -- pole pole, teratibu
God bless you -- mungu aku bariki
friend -- rafiki
up -- jew
down -- chini
wait -- subiri
yes -- dia/o
no -- hapana
welcome -- karibu
pound -- shindilia
increase -- mgaza
bucket -- no
picture -- pitcha
where -- wapi
you -- wewe
my name is -- jina langu ni ...
what is your name? -- jina laku nani?
faster -- haraka
woman beast -- mwanamke bora
man boar -- mwana polo
tough woman -- bownsa
hey/whats up/hows it goin (informal greeting exchange) -- mambo/poa/ali/safi/mecha/kibao