Scool Scrabble Tool
Scool is a tool for finding valid letter combinations for Scrabble. It currently uses the TWL06 wordlist. We'll add other wordlists in the future to complement TWL, such as SOWPODS.
You would benefit by memorizing these:

 

Construct your own queries:

Like:

Use the following placeholders for the like query: % matches any number of characters; _ matches exactly one character, !negates; @ intersects (AND's) the results. The like query is a fast and flexible way to find words matching a pattern.

 

Anagram:

Sub-anagrams are coming... stay tuned!

 

Where:

The where query is more advanced. It lets you define the SQL WHERE clause manually. For example, here's a query that finds all 7-letter words with 'able' somewhere inside them.

Add r to 2-letter words
50 words found.

air              rag              rid              
bar              rah              rif              
dor              rai              rin              
err              ram              rod              
far              ran              roe              
fer              ras              rom              
gor              rat              row              
her              raw              rum              
kir              rax              run              
lar              ray              rut              
mar              red              rya              
mir              ref              rye              
mor              rem              sir              
nor              res              tar              
par              ret              tor              
per              rex              yar              
rad              rho