Coffee Needs Real Teeth: Japan's Softer F

In Japanese, the sound in words like 'fuji' is made by pushing air gently through slightly rounded lips, without your teeth doing much work at all. English F, though, needs your top teeth resting lightly on your bottom lip, creating friction right at that contact point — a noticeably different feeling in the mouth. Without that teeth contact, English words like 'coffee,' 'first,' and 'family' can sound softer or less crisp than native listeners expect, sometimes even blurring toward an 'h' sound. Try this: say 'coffee' slowly, and check that your top teeth are actually touching your bottom lip as you make the F — you should feel a light buzz of friction, not just a puff of air from your lips alone. Practice with 'first, family, coffee, laugh' a few times each, watching your mouth in a mirror if you can. This tiny adjustment in teeth placement makes your F sound instantly clearer and more distinctly English.