痛みがひどくなってきました。

pain; ache; soreness; grief; distress; damage; injury; wear; bruise; break

indicates sentence subject (occasionally object); indicates possessive (esp. in literary expressions); but; however; still; and

cruel; heartless; hard; harsh; severe; violent; intense; strong; heavy; extreme; very bad; terrible; awful; excessive; exorbitant; unreasonable; outrageous; unfair; unjust

to become; to get; to grow; to be; to reach; to attain; to result in; to prove to be; to consist of; to be composed of; to succeed; to be complete; to change into; to be exchanged for; to play a role; to be promoted; to do ...