This is the not so little "little Liddell." I have long known about the famous "Little Liddell," but only just discovered that this amazing dictionary has been reprinted in larger type. Although it says that it is a reprint of the 1909 Little Liddell, that dictionary actually goes back to 1871. It is the absolute sine qua non of anyone who wishes to read ancient Greek authors. You are helpless without it.
The most useful feature of this lexicon is that it lists in separate entries all of the forms of irregular Greek verbs. So, e.g., if you need to look up a second aorist form such as heilon, you will find it where you expect to, and will be informed that it is derived from haireo. Or say you need to look up opsomai; again, if will be where you want it to be and you will find that it is the future of horao. Apart from verbs, many other odd and irregular forms (and there are notoriously many of them in the Greek language) are separately listed and defined as well. This makes it an extremely handy tool.
As for definitions, they are incredibly clear and precise; for a lexicon that is well over a century old, they read as if they were written yesterday.
Get one for each room in your house, so that you never have to be too far away from it.