Source - http://www.english-test.net/forum/ftopic12656.html

Hi

Why teethless is a wrong word?

If someone has quite a few teeth, the right word toothless sounds logical (the same difference is with footless and feetless both are right. OK.)

Can I still use teethless if I speak about an animal (a fish) that has no any teeth at all (havent and hadnt had. and wont have :))
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Tamara
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Joined: 25 May 2006
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Location: UK
#2 (permalink) Sat Sep 16, 2006 8:50 am Expression: "eyeless in Gaza"
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The singular is used with adjective forms: a shoe store, a 10-minute break, toothless, eyeless in Gaza, an eyeful, hand-crafted, splay-footed, etc.

Your fish is still toothless, though he is left with nothing but gums. Cf. the toothed whales and the sabretoothed tiger.
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