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 o to 3-letter words
93 words found.

also             mano             open             
alto             mayo             opes             
arco             memo             opus             
boyo             meno             orad             
broo             milo             ores             
bubo             miso             otic             
camo             mono             outs             
capo             oars             ovum             
dado             obas             owed             
dago             obes             oyes             
dido             obey             pepo             
dino             obis             peso             
ergo             obit             piso             
fado             odah             polo             
fano             odor             pomo             
faro             ofay             rato             
fido             ogam             redo             
filo             ogee             repo             
fino             oink             roto             
gobo             okas             sago             
hero             okay             sego             
hobo             olea             solo             
hypo             oleo             sumo             
kayo             oles             taro             
keno             omen             topo             
kino             onos             toro             
kobo             onus             toyo             
levo             oohs             veto             
lido             oops             wino             
lino             opah             
lobo             opal             
logo             oped