Build around a base
Take ACT: action, active, activity, actor, react, interaction. Mark the part of speech and the affix for each form. The family shows how spelling and grammar connect, which is more useful than memorizing six unrelated translations.
Add collocations
Words become usable through partners: take action, active role, chemical reaction, interact with. Record two natural collocations for each family member. A word you can place in a phrase is easier to retrieve in writing and speaking.
Separate false relatives
Similar spelling does not guarantee the same family. HISTORY and STORY overlap historically but are not interchangeable in modern use; ECONOMIC and ECONOMICAL have related roots but different meanings. Verify relationships in a reputable dictionary rather than guessing from appearance.
Review by production
Cover the derived forms and rebuild them from the base. Then write one sentence that contrasts two members, such as “The actor took action after an active discussion.” Production exposes gaps that passive rereading hides.
Quick review
The strongest habit is to separate hard constraints—letter counts, length, fixed positions—from helpful clues such as frequency and familiar patterns. Use the tool to narrow possibilities, then use meaning and context to choose.