For Eudic (MDD format)
- Longman Dictionary of Contemporary English (LDOCE) En-Cn 5++ Version: 1.35
- Longman Dictionary of Contemporary English (LDOCE) En-Cn 5++ Version: 2.15
- Longman Dictionary of Contemporary English 6th Edition
- English Etymology (etymonline.com)
- Online Etymology Dictionary 2023
- Root and affix
- Vocabulary.com Dictionary
- Oxford English Living Dictionaries (aka. ODE) Online Version: 1.51
- Oxford English Dictionary
- Collins COBUILD Dictionary Overhaul Version: 2.30
- Oxford Collocations Dictionary for Students of English, 2nd edition
- Macmillan English Dictionary for Advanced Learners 2nd Edition
For macOS native dictionary