This is the 9519th most frequent Japanese word.
終わろ
"終わろ" is the volitional form of "終わる," meaning "to end" or "to finish."
In this sentence, "終わろ" is used as part of the phrase "終わろうとしています," which is in the volitional form to indicate the state or occurrence of ending.
試合はついに終わろうとしています。
The match is finally about to end.
Here, "終わろ" is used in a past narrative context as part of "終わろうとした時," indicating that an event was nearing its conclusion.
彼女の話が終わろうとした時、電話が鳴りました。
Just as her story was about to conclude, the telephone rang.
In this usage, "終わろ" appears as part of "終わろうとも," expressing a hypothetical condition where the ending of the movie doesn't diminish the impact.