excessive
Word family
Synonym discussion
Sense: adjective/1
All four words describe something that goes beyond what is normal or acceptable, but they differ in register and emphasis. Excessive is the most neutral and widely used term, covering amounts, behaviours, and actions that are too much (excessive force, excessive rain). Extreme is stronger and more dramatic, often suggesting the far end of a physical or emotional scale (extreme weather, extreme measures). Disproportionate is formal and highlights unfairness or imbalance — the response is too large compared to the cause (disproportionate punishment). Undue is also formal, appearing in legal and bureaucratic writing to mean 'unnecessary or unwarranted' (undue hardship, undue influence). In everyday speech, excessive is the safest choice; extreme adds emotional weight, while the other two belong in formal registers.
Common collocations
Etymology
Excessive comes from the Latin word 'excessivus', which grew out of 'excedere' — formed from 'ex-' (out) and 'cedere' (to go). So the original image is of 'going out beyond' a boundary or limit. The word entered English in the late 1300s with the same core meaning it has today.