kai (Greek #2532)
and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
KJV usage: and, also, both, but, even, for, if, or, so, that, then, therefore, when, yet.
Pronounce: kahee
Origin: apparently, a primary particle, having a copulative and sometimes also a cumulative force
lupeo (Greek #3076)
to distress; reflexively or passively, to be sad
KJV usage: cause grief, grieve, be in heaviness, (be) sorrow(-ful), be (make) sorry.
Pronounce: loo-peh'-o