The best alternatives to WordReference for Alfred are Alfred, Mate Translate, and Meshtag. If these 3 options don't work for you, we've listed a few more alternatives below.
Alfred is a productivity application for macOS, which boosts your efficiency with hotkeys, keywords and text expansion. Search your Mac and the web, and control your Mac using custom actions with the Powerpack.
TextGrabber quickly digitizes fragments of printed text and turns the recognized result into action: call, email, follow links, translate into 100+ languages and many more. The app captures and recognizes information even without connecting to the Internet.
WT2 is a real-time, wearable translator that includes 2 earphones, 1 app, and a customized charging case. The earphones provide long-term, hands-free foreign language communication, allowing you to immerse yourself in the local culture while traveling, express yourself more completely and build more meaningful connections with the people you meet.