pikraino (Greek #4087)
to embitter (literally or figuratively)
KJV usage: be (make) bitter.
Pronounce: pik-rah'-ee-no
hoti (Greek #3754)
demonstrative, that (sometimes redundant); causative, because
KJV usage: as concerning that, as though, because (that), for (that), how (that), (in) that, though, why.
Pronounce: hot'-ee
Origin: neuter of 3748 as conjunction