Let's take a look at how to pronounce the vowels ui in Gaelic.
Ui is yet another sound that has both a long and short form. The short ui sound, without a grave accent, can be heard in the instruction cuir (put) and in duilich (sad):
put / place / give
give it to me
a sad man
If the u has a grave accent, then ùi is pronounced differently, which can be heard in dùisg (awaken):
wake up now