Persistent
Persistent adjective - Continuing despite difficulties, opposition, or discouragement.
Serious and persistent are semantically related. In some cases you can use "Serious" instead an adjective "Persistent".
Serious
Serious adjective - Not joking or playful in mood or manner.
Persistent and serious are semantically related. Sometimes you can use "Persistent" instead an adjective "Serious".
Nearby Words: seriously, seriousness
Both words in one sentence
- While serving a sentence in a different penitentiary and acting like a model prisoner, he learns that inmates may get themselves transferred to Alcatraz for persistent or serious troublemaking in prison.
Source: Get into Jail Free - It refers to a specific former troper with, unfortunately, serious Real Life mental and emotional problems who has been very persistent about attempting to evade his ban.
Source: Just For Fun / Ask The Tropers -
Reality Ensues: Compared to many other works from the Marvel Cinematic Universe, this show is incredibly persistent in how realistically unforgiving it portrays a number of serious subject matters.
Source: Series / Daredevil
Cite this Source
Serious and Persistent. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/persistent/serious
Persistent & Serious. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/persistent/serious>.
Serious or Persistent. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/persistent/serious.
Google Ngram Viewer shows how "persistent" and "serious" have occurred on timeline