nifty

Something that's nifty is really great. You might tell your mom that the Hawaiian themed decorations for your dad's surprise party look nifty.

Nifty is informal and a little old fashioned, but it's a perfect way to compliment a cute outfit or express your excitement about your little sister's new roller skates. If a friend comments on your nifty tap dance routine, she thinks it's swell. Nifty has been around as a colloquial term for "stylish or smart" since the 1860s, possibly from theater slang.

Definitions of nifty
1

adj very good

Synonyms:
bang-up, bully, corking, cracking, dandy, great, groovy, keen, neat, not bad, peachy, slap-up, smashing, swell
good
having desirable or positive qualities especially those suitable for a thing specified

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