behind the curve
US /bɪˈhaɪnd ðə kɜrv/
UK /bɪˈhaɪnd ðə kɜrv/
1.
lagging behind current developments or trends; not up-to-date
:
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Our company is behind the curve when it comes to adopting new technology.
•
If you don't keep learning, you'll quickly find yourself behind the curve.