then vs Zen: hear and say the difference
then and Zen are identical except for one sound: then has the voiced th, /ð/, and Zen has the z sound, /z/. Both buzz, but TH buzzes at the teeth with a wide, soft tongue while Z buzzes behind them through a narrow groove.
The two words
The difference
What actually changes
Both buzz, but TH buzzes at the teeth with a wide, soft tongue while Z buzzes behind them through a narrow groove.then — /ð/
- Lips
- Relaxed, slightly apart.
- Tongue
- Tip touching the back or edge of the top front teeth.
- Jaw
- Slightly open.
Zen — /z/
- Lips
- Slightly spread.
- Tongue
- Tip near the ridge with a narrow groove — the same shape as S.
- Jaw
- Almost closed.
Each word in a sentence
then
Finish it, then rest.
Zen
The garden had a zen calm.
Why this pair is hard
French, German, Russian and Japanese typically replace voiced TH with z, so 'breathe' ends like 'breeze'. The tongue has to come forward past the teeth and flatten out; the voicing itself is already correct.
Straight answers
What is the difference between "then" and "Zen"?
One sound. then is /ðen/ and Zen is /zen/ — everything else in the two words is identical, so that single contrast carries the whole meaning. Both buzz, but TH buzzes at the teeth with a wide, soft tongue while Z buzzes behind them through a narrow groove.
Why do I say "then" and "Zen" the same way?
French, German, Russian and Japanese typically replace voiced TH with z, so 'breathe' ends like 'breeze'. The tongue has to come forward past the teeth and flatten out; the voicing itself is already correct.
Should I train my ear or my mouth first?
Your ear. If you cannot reliably hear which word was said, your mouth has no target to aim at, and drilling produces a sound you cannot check. Run the listening test on this page until you are scoring four or five out of five, then record the pair.
Say "then" and "Zen" and see which one you said
One take covers both words: reference mode aligns each sound against its target, so the contrast comes back scored on both sides. Free, private, in your browser.