wordnet-morphy

WordNet-style morphological processing (morphy) for lemmatization. It checks exception lists, applies POS-specific suffix rules, and verifies candidates through a caller-supplied predicate (typically backed by wordnet-db) while sharing POS types from wordnet-types.

Why it's fast

• Pre-parsed exception files (*.exc) cached in memory for O(1) lookups.
• Fixed suffix rule tables per POS keep candidate generation tight and branch-light.
• No allocations for unchanged surface forms; minimal cloning otherwise, with normalization kept simple.

What you can do

• Lemmatize inflected forms into canonical WordNet lemmas (e.g., “running” → “run”).
• Carry provenance for each candidate (surface, exception, or rule-based) to inform downstream ranking.
• Plug into any loader via the lemma_exists callback—commonly WordNet::lemma_exists from wordnet-db.

Related crates

• wordnet-db: supplies the lemma existence predicate used to confirm morphy candidates.
• wordnet-types: provides the shared Pos enum and other types used in morphy APIs.

Docs

• API reference: https://docs.rs/wordnet-morphy