The family
One family of free data sites
1 reference sites covering word lists built from a public-domain lexicon. Each answers one question properly instead of all of them badly. Nothing here is paid placement, and nothing asks you to sign up.
WordLab (you are here)
Every word that is actually playable, from a public-domain lexicon — with the letters you have, the length you need, and no invented definitions.
The other family
A different audience and a different subject, so it gets one link rather than a shared nav.
FuelFacts
Calories, protein, fat and 12 more nutrients for 1,799 foods, straight from the USDA SR Legacy tables.
All of these are built and maintained by one person, funded by advertising, and published with their working shown. Corrections go to the contact page; the data sources are listed on each site's method page.