Etymology dictionary (including word roots; else a separate word roots dictionary).
Unabridged dictionary.
- Oxford English Dictionary.
- Webster’s New Universal Unabridged Dictionary.
Optional: Picture dictionary.
Encyclopedia.
- Wikipedia.org (note the help that Wikipedia.org/wiki/Special:Categories & Wikipedia.org/wiki/Special:Categories are).
- Encyclopedia Britannica.
Categorized thesaurus
- Roget’s International Thesaurus is unbeaten in categorized thesauruses.
Optional: Rhyming dictionary.
- The Complete Rhyming Dictionary is the classic in print; it uses single & plural phoneme rhyme matches.
A course for study could be embarked on from as early as sixteen.
For earlier learners: look into picture encyclopedias (sic; encyclopediae) & picture dictionaries.
For second language learners: look into bilingual picture dictionaries.
Thank you!
⸻ ValentynJoe
USAMinnesota
2024Maysub>6th