What it means
To shell out means to hand over money you really didn't fancy spending, usually because something's forced your hand. It's got that grumpy, teeth-clenched feel to it, whether it's for bills, repairs, fees, or some last-minute nonsense that rinsed your wallet.
Usage examples
"I had to shell out three hundred quid at the garage for a so-called quick fix. Absolute joke, mate. Guess it’s beans on toast till payday."
"We had to shell out for a new boiler in January, worst possible timing, freezing and skint."
"I'm not shelling out forty quid for a taxi, we'll wait for the night bus like normal people."
"Had to shell out another eighty bucks for the dentist, and all he did was poke about and tell me to come back next week."
"I'm not shelling out festival prices for a warm pint and a sad burger, you must be dreaming."
Where it comes from
Recorded from the mid-19th century, shell out first showed up in American English as a way to mean coughing up money. The image is pretty clear: cash coming out from its shell or casing instead of staying tucked away. From there it spread wide and kept that annoyed paying-up vibe.
Other ways to say it
This expression also appears in