Sound Safari
Speech Sound Library
Every speech sound, by age
23 consonant and digraph sounds — when each one typically develops, what goes wrong, how to practice it, and the complete word list to work with. Built from McLeod & Crowe (2018) / Crowe & McLeod (2020) developmental norms and Sound Safari's clinical data.
Speech sound development chart
Each bar shows the window from 50% mastery to 90% mastery for that sound. Click any row to open its page.
Source: McLeod & Crowe (2018); Crowe & McLeod (2020), AJSLP.
Browse by mastery age
Pick a sound to open its full guide — developmental norms, common challenges, how to practice, and the full word list by position.
Early-developing sounds
Most kids master these by age 4
Mid-developing sounds
Most kids master these by age 5
Late-developing sounds
Mastered by age 6 or later — common SLP targets
Blend word lists
Two-consonant clusters get their own lists — every blend in the practice library, organized by family.
