
brilliant
Outstanding, excellent, or clever; of exceptionally high quality or intelligence.
Das war eine brillante Analyse der aktuellen politischen Lage.
That was a brilliant analysis of the current political situation.
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Outstanding, excellent, or clever; of exceptionally high quality or intelligence.
Das war eine brillante Analyse der aktuellen politischen Lage.
That was a brilliant analysis of the current political situation.

Brightly shining, sparkling, or radiant.
Sie trug ein Kleid, das mit brillianten Pailletten besetzt war.
She wore a dress covered with brilliant sequins.
You can recognize the meaning from the noun that 'brilliant' describes. If it refers to abstract things like an idea or performance, it means 'hervorragend' (outstanding). If it refers to concrete objects like jewelry or eyes, it means 'glänzend' (shiny/brilliant).
Er hatte eine brillante Idee, um das Problem zu lösen.
He had a brilliant idea for solving the problem.
In the meaning 'hervorragend' (outstanding), 'brilliant' is often combined with intellectual or creative achievements. Typical examples are: 'eine brillante Idee' (a brilliant idea), 'eine brillante Analyse' (a brilliant analysis), 'ein brillanter Redner' (a brilliant speaker), or 'eine brillante Vorstellung' (a brilliant performance).
Die Pianistin gab ein brillantes Konzert.
The pianist gave a brilliant concert.
The word 'brilliant' in the sense of 'ausgezeichnet' (excellent) belongs to an elevated style. It expresses very high praise and is stronger than 'sehr gut' (very good).
Ihre Argumentation in der Debatte war einfach brilliant.
Her argumentation in the debate was simply brilliant.
brilliant / awesome
Genial and brilliant praise an exceptionally clever idea or solution. Genial emphasizes creative originality and inventiveness. Brilliant, by contrast, can highlight the solution’s particularly high, convincing quality or intelligence more generally.

Marias Lösung ist brilliant, weil sie das schwierige Problem vollständig und überzeugend löst.
Maria’s solution is brilliant because it solves the difficult problem completely and convincingly.
Marias Lösung ist genial, weil sie dafür ein völlig neues Verfahren erfunden hat.
Maria’s solution is brilliant because she invented a completely new method for it.