"Too" = excessively (more than necessary or desirable); "enough" = sufficiently (the right or necessary amount). Used in complementary structures.
Adverb: more than acceptable or necessary, with a negative consequence. Classic structure: TOO + adjective/adverb + TO + infinitive. "It is too cold to swim" = it is so cold that nobody can swim (consequence: cannot swim). "She speaks too fast to follow" = she speaks so fast you cannot follow her. TOO always goes BEFORE the adjective or adverb it modifies.
The package was too large to fit in the mailbox — the delivery person had to leave a collection notice.
He spoke too quietly for the people at the back of the room to hear — someone asked him to use the microphone.
The project is too complex to complete in a single sprint — we need to break it into three phases.
Determiner/adverb: the right or sufficient amount. As an ADVERB: ENOUGH goes AFTER the adjective or adverb it modifies. "She is tall enough to reach the shelf" = she is sufficiently tall to do it (she can). Structure: adjective/adverb + ENOUGH + TO + infinitive. As a DETERMINER (before a noun): "There is enough time" = there is sufficient time. ENOUGH goes BEFORE nouns but AFTER adjectives/adverbs.
She was experienced enough to handle the client independently without needing to consult her manager.
Is there enough room in the car for all five of us and the luggage?
He studied hard enough to pass the exam, but not quite hard enough to achieve the distinction he had hoped for.
Common mistake
Two common position errors: (1) "She is enough tall" = INCORRECT. ENOUGH as an adverb goes AFTER the adjective: "She is tall ENOUGH." (2) "She is too much tired" = INCORRECT. TOO goes directly before the adjective/adverb: "She is TOO tired." The third error: confusing the meaning. "The coffee is too hot" (you cannot drink it) vs "The coffee is hot enough" (you can drink it, it is the right temperature). They are exactly opposite in their implication about whether an action is possible.
Trick to remember it
Position: TOO goes BEFORE. ENOUGH goes AFTER (adjectives/adverbs). "She is TOO tired" (TOO before). "She is tired ENOUGH" (ENOUGH after). For nouns, ENOUGH goes BEFORE: "ENOUGH time", "ENOUGH money". Meaning: TOO = EXCESS (problem, you cannot do it). ENOUGH = SUFFICIENT (just what is needed, you can do it). "too tired to work" = so tired she cannot work. "tired enough to sleep" = sufficiently tired to sleep. Perfect opposites.
Quick rule
Too + adjective/adverb + to (excess, negative consequence). Adjective/adverb + enough + to (sufficiency, the action is possible). Enough + noun (there is sufficient).
Did you know?
"Enough" has one of the most irregular spellings in English — pronounced "inuf" but written "enough". This is a legacy of Old English "genog" (sufficient), which in Middle English evolved to "inough"/"ynough" before reaching the modern form. Shakespeare wrote "enow" (another ancient variant) in some of his works. The silent final GH is characteristic of Old Germanic English and appears in other words like "through", "though", and "tough" — all with the same silent ending derived from the original Germanic phonetics.
Exercise 1 · Pick the right one
The report was _____ detailed — it ran to 200 pages and reviewers said it was overwhelming.
Exercise 2 · Pick the right one
She was experienced _____ to lead the project without supervision from the senior team.
Exercise 3 · Form the word
Too + adjective/adverb + to (excess, negative consequence). Adjective/adverb + enough + to (sufficiency, the action is possible). Enough + noun (there is sufficient).
Two common position errors: (1) "She is enough tall" = INCORRECT. ENOUGH as an adverb goes AFTER the adjective: "She is tall ENOUGH." (2) "She is too much tired" = INCORRECT. TOO goes directly before the adjective/adverb: "She is TOO tired." The third error: confusing the meaning. "The coffee is too hot" (you cannot drink it) vs "The coffee is hot enough" (you can drink it, it is the right temperature). They are exactly opposite in their implication about whether an action is possible.
Position: TOO goes BEFORE. ENOUGH goes AFTER (adjectives/adverbs). "She is TOO tired" (TOO before). "She is tired ENOUGH" (ENOUGH after). For nouns, ENOUGH goes BEFORE: "ENOUGH time", "ENOUGH money". Meaning: TOO = EXCESS (problem, you cannot do it). ENOUGH = SUFFICIENT (just what is needed, you can do it). "too tired to work" = so tired she cannot work. "tired enough to sleep" = sufficiently tired to sleep. Perfect opposites.
Bryan López
Founder of SpeakUP Academy