That is the correct spelling of "retrospectively" (seen in hindsight).
A small mistake can cause you great pain or distress.
The consequences I faced due to my most serious mistake were severe and had a significant impact on my life.
One was Grievous' own (originally Sifo-Dyas') the other 3 were lightsabers formerly owned by K'Kruhk, Sha'a Gi, and Jmmaar. Jmmaar's was the green one used by Grievous as can be seen in his fight vs Obi-Wan on Utapau (in revenge of the sith)
Ramming my car into your house was a grievous error.
Grievous Angel was created in 1973.
Grievous' birthday is unknown.
Grievous Angels ended in 2004.
Eventually, she succumbed to her grievous wounds.
ABSOLUTELY NOT! Ahsoka is a Togruta and Grievous is a Kaleesh.
i sincerely apologize for my grievous error.
I am a mistake is not an example of a metaphor; I am a mistake means I am the product of a mistake.