Custom Vocabulary for Voice Typing: A Parent's Guide to Tricky Names and Science Words
Dictation handles everyday sentences remarkably well — and then your child tries to write about Sacagawea, chlorophyll, or their best friend Aoife, and the transcript turns into soup. If homework keeps stalling on the same five words, nothing is wrong with your child or the microphone. This is a known weak spot of speech recognition, and there are practical ways to fix most of it.
Why Dictation Apps Struggle With Certain Words
- Proper nouns are unpredictable. Names rarely follow normal spelling-to-sound rules, so when a recognizer hears an unfamiliar name, it guesses a common word that sounds similar.
- Academic vocabulary is rare in everyday speech. Speech models learn mostly from casual adult conversation. "Photosynthesis" and "Mississippi" show up far less often than "pizza" and "weekend," so they are recognized less reliably.
- Children's voices are harder to recognize. Most systems are tuned primarily to adult voices, and kids have higher pitches and still-developing articulation.
- Homophones need context. "Their," "there," and "they're" sound identical — only an understanding of the sentence decides which one belongs, and weaker models guess wrong.
Practical Fixes That Work in Any App
- Slow down on tricky words — just those words. Speed matters most on the hard vocabulary. A brief pause before and after the name dramatically improves recognition.
- Use the full name every time. "Grandma Linda" gives the recognizer more context than "Grandma," and consistent phrasing produces consistent results.
- Keep a family word list. At the start of each science or history unit, write down the new terms plus the names that come up in class. After a dictation session, review the transcript together and fix errors by keyboard — it doubles as a spelling review.
- Use built-in dictionary features when the app offers them. Many mainstream tools let you add contacts or custom words so they are recognized in the future. A few minutes of setup can save hours of cleanup over a school year.
- Rehearse the hard words before dictating. Have your child say the word out loud twice before the session starts, the same way they would rehearse a spelling word. "Practicing" the pronunciation once measurably helps.
What to Look For in a Kid-Friendly Dictation Tool
A short checklist for parents comparing voice typing tools:
- Age-appropriate dictionary support. A kid-friendly dictionary turns an unfamiliar word into something the child can actually learn from.
- On-device processing. A child's voice should not need to be uploaded to a cloud service just to become text.
- Suggestions, not rewrites. Vocabulary help should point the student toward stronger words, not replace their sentences.
- Voice punctuation commands. Clean text is much easier to proofread when "period" and "new line" work.
How Kiword Approaches Tricky Words
Kiword was built for K-12 homework, so these problems are treated as first-class citizens. Dictation and processing run locally on your Windows PC, and the built-in dictionary is designed for kids: when a word needs explaining, your child gets an age-appropriate definition instead of a wall of adult jargon. As their vocabulary grows, Kiword's coach suggests stronger words at the right difficulty level — and the student always confirms the final word.
For the words no recognizer gets right on the first try, the family word list from the previous section still works best: say it clearly, check the transcript, fix by keyboard, and move on. Small friction on five hard words is a fair trade for a draft that arrives in minutes instead of an hour.
Frequently Asked Questions
Can you add custom words to voice typing?
It depends on the app. Many desktop and phone keyboards let you add contacts or custom dictionary entries so specific names are recognized in the future. For schoolwork, the habit that works everywhere is a shared word list for the current unit: rehearse the hard words, dictate, then review the transcript together.
Why does dictation keep getting my child's friend's name wrong?
Proper nouns are the hardest case in speech recognition because they are unique and often do not follow normal spelling patterns. Use the full name consistently, slow down slightly on that word, and fix it once by keyboard — after that, your child will know to expect it and the fix takes seconds.
Will voice typing help my child learn new vocabulary?
It can, if the tool is designed for it. A kid-friendly dictionary turns every unfamiliar suggested word into a small vocabulary lesson, and difficulty-scaled suggestions push the child toward stronger words over time. A plain transcription tool does neither — it just converts sound to text.

Kevin Cheng
Founder of Kiword
Kevin Cheng is the founder of Kiword. With more than five years in education technology, he builds privacy-first tools that help students learn without doing the work for them.