Exceed means to go beyond a limit or amount: "Repairs exceeded the estimate by £400." Succeed means to achieve what you set out to do — or to take over from someone: "The appeal succeeded"; "She succeeded him as head of department." Exceed needs something to be measured against; succeed does not.
The core difference
These two get grouped together for two reasons: they share the unusual -ceed ending, and both turn up in the language of achievement. But they are not synonyms. Exceed is comparative — it always implies a threshold that has been passed. Succeed is about outcome, or about sequence.
Exceed
Exceed is transitive: something exceeds something else. There must be a benchmark in the sentence, stated or clearly implied.
- Demand exceeded supply within an hour.
- Do not exceed the stated dose.
- The results exceeded our expectations.
You cannot simply "exceed". "He exceeded last year" is incomplete unless the reader knows what he exceeded.
Succeed
Succeed has two distinct senses, and it is worth keeping them apart.
- To achieve an aim. It takes in plus an -ing form, not the infinitive: "They succeeded in raising the money", never "succeeded to raise".
- To follow in a role. "He succeeded his mother as chair"; "she succeeded to the title in 1994." In this sense it can take a direct object (a person) or to plus a position.
The test
Ask whether you are comparing against a number, limit or standard. If yes, you want exceed — and you should be able to name the thing being surpassed. If instead you mean "managed to" or "came after", you want succeed.
"The bid ___ed" → the bid managed to work → succeeded. "The bid ___ed the asking price" → went beyond it → exceeded.
The spelling, which is the real reason people search for this
English has only three verbs ending in -ceed: exceed, proceed and succeed. Every other member of the family ends in -cede: concede, recede, precede, secede, intercede, accede. There is one outlier, supersede, which ends in -sede and is the only word in English that does.
So if you can remember the trio — exceed, proceed, succeed — you have solved the whole set. Note also the noun forms are irregular: exceed gives excess, proceed gives procedure (one e in the middle, unlike the verb), succeed gives success and succession.
The mistakes worth checking
- Precede vs proceed. These two are far more dangerous than exceed vs succeed. Precede means to come before; proceed means to carry on. "The introduction precedes the summary" is not "proceeds".
- Succeeded to do. Write "succeeded in fixing it", not "succeeded to fix it".
- Exceed as a compliment. "She exceeded" on its own is unfinished. Add the benchmark: "she exceeded every target she was given."
Frequently Asked Questions
Which words end in -ceed and which in -cede?
Only exceed, proceed and succeed end in -ceed. All the others — concede, precede, recede, accede, secede, intercede — end in -cede. Supersede is the sole -sede word.
Is it "succeeded in doing" or "succeeded to do"?
Succeeded in doing. "They succeeded in cutting waiting times." The form with to belongs to the other sense: succeed to the throne, meaning to inherit a position.
Can you say "exceed expectations" and "succeed expectations"?
Only exceed expectations. Succeed cannot take expectations as an object; you would have to rewrite it as "met expectations" or "succeeded beyond expectations".