question
Queer
Queue
quiver
quartz
yanqui, yanquis, youthquake, youthquakes
Quartz.
quite, quote
There are a lot of words that start with "q" and not "qu". Qabalah, qat, qi, qaid, and mbaqanga are a few examples.
quake, queue, quite
Quay. . .
qu is the only 2 letter latin word
No. Qi is the only legal 2-letter word that starts with Q.