Colour with a u!
This dictionary knows ALL the words: the ones that smaller dictionaries know, plus the really obscure and/or archaic ones. Meanings are clear and complete, and the pronunciations are great for those uncommon words youve seen written but arent sure how to pronounce. Special bonus: the meanings are written in Br. E., with Am. E. spellings listed as variants. That makes *this* Canadian very happy! Theres one downside: it doesnt recognise words you misspell, nor does it list alternates or ask "did you mean…?" So you have to know how to spell it…to look up how to spell it. Other than that, its terrific.
lazyscribe about Shorter Oxford English Dict, v1.2