How to use too and enough

Too short and not long enough both mean the same thing.

Word order with too and enough
Too goes before an adjective or adverb.
Claire doesn’t want to marry Henry. She thinks he’s too old.
Zedco are in trouble. The company reacted too slowly to the rise in prices.

Enough goes after an adjective or adverb.
The water isn’t hot enough. It needs to be boiling, NOT enough hot
You didn’t put the screws in tightly enough, NOT enough tightly

Too many, too much and enough go before a noun.
No wonder you’re tired. You’ve been going to too many parties.
Andrew spends too much time working.
There’ll be fifteen people for coffee. Have we got enough cups?
Everything is so expensive. Did you bring enough money?

We use many with a plural noun and much with an uncountable noun.

Compare these examples with enough.
After an adjective: The coffee isn’t strong enough.
Before a noun: You didn’t put enough coffee in.
We leave out the noun if the meaning is clear without it.
Just add a little water. Not too much. We’ll need fifteen cups. Have we got enough?

Other structures with too and enough
We can use a phrase with for after too or enough.
These puzzles are too difficult for children. This coat isn’t warm enough for winter.
Have we got enough cups for everyone?

We can also use a to-infinitive.
It’s too dangerous to walk home at this time of night.
There are too many museums here to visit in a single day.
Are you fit enough to run a marathon?
I couldn’t get close enough to see properly.
Vicky didn’t bring enough money to buy two CDs.