Use 'irreducible' when something cannot be broken down further or simplified, in both physical and abstract senses. The theory presents an irreducible truth that stands on its own.
Pro Tip 2/3
Serious Tone
'Irreducible' often appears in serious or scholarly contexts, rather than everyday conversation. The researcher explored the irreducible principles of the phenomenon.
Pro Tip 3/3
Minimum State
The term can imply that something has been reduced to the lowest possible level. The entity's operating costs are at an irreducible minimum.