Circumstances are things that are set in place or situations that occur.
An antonym would be Volition.
That would depend on the context in which brilliant was used. Brilliant can be a description of the cut of a diamond, intelligence, light, lustre or polish etc. The opposite would be different in each circumstance. eg dull, thick, dim, cabochon.
Synonyms for CIRCUMSTANCE: event, occurrence, incident, instance, happening, episode, case.
cir
adjective form of the word 'occasion' is occasional.
it is pomp and circumstance
A mitigating circumstance.
A circumstance that appears to be something different, or even opposite, could be called misleading, or deceptive, or spurious.
When their magnitudes are equal and their directions are separated by 180 degrees ... i.e. they're opposite.
That would depend on the context in which brilliant was used. Brilliant can be a description of the cut of a diamond, intelligence, light, lustre or polish etc. The opposite would be different in each circumstance. eg dull, thick, dim, cabochon.
That's a completely different circumstance.
Satires of Circumstance was created in 1914.
Victim of Circumstance was created in 1999.
Circumstance was released on 08/26/2011.
The Production Budget for Circumstance was $900,000.
"They happened to be partnered together by circumstance."
I will make an exception in this circumstance, with certain reservations.
Circumstance - short story - was created in 1860.