Why is there an L in could?

Q: Why is there an L in could?

It was added in the early 1500s to match should and would, which had a real L. Could comes from Old English cūþe and never had one.

Q: How do you pronounce could in fast speech?

Unstressed, it reduces to /kəd/ — "I kəd help". Could you often sounds like "COOJ-uh".

Could never had an L. It was coude in Middle English; the L was copied in the 1500s from would and should, whose L really was once pronounced.

Then · Old English

cūþe

said like KOO-the

early 1500s↓

Now · American English

could/kʊd/

said KUD, rhymes with good

Could is the past tense of can. In Old English it was cūþe, and in Middle English coude or couthe. There was no L in it, because there was never an L in can.

Its neighbours were different. Should (Old English sċolde) and would (Old English wolde) did have a real L, and it was pronounced. The three words are used in the same way and often side by side, so in the early 1500s writers made coude match the other two and gave it an L: could.

The analogy briefly reached the pronunciation too — some early modern speakers may have said the L — but it did not last. Meanwhile should and would lost their real L in speech, probably because these small words are so often unstressed. The result is three words that now look and sound alike, with one invented L and two lost ones.

How the word changed

1
Old English
cūþe
Past tense of cunnan, "to be able". No L.
2
Middle English
coude, couthe
Still no L.
3
Early 1500s
could
L added by analogy with should and would.
4
Modern English
could
The L is silent, as in should and would.

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