(Especially For Youth) A LDS-based program for youth aged between 14 and 18. Honestly, the best flippin' week of your life.
EFY is the best week of my year.
by Zach14 February 04, 2008
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Efi is a girl who looks like she is quiet. But is loud, energetic, funny and sassy. She is really pretty but her beauty is hidden. She is smart but is underestimated. She is good at working independently, but prefers working in groups. She seems super happy. But is suffering from a little bit of depression. Some people might judge her at first, but once they get to know her they start to like her.
boy: look at efi, shes soo cute

girl: ya, shes littt
by by honeyhoney January 15, 2019
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She’s a lovely person who smiles and twerk a lot. She’s sometimes weird but have a little bitch inside. She’s smart.
by Kdjyudbe June 11, 2020
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always smile but twerk a lot. She‘s smart and lovely and a little bitch.
by Kdjyudbe June 11, 2020
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efi is the shortened term relating to emotionally fucked-up individual.
chris crocker,charlie manson,mark chapman,and many more would be classed as efi.

1st man:did you see that chris crocker video?
2nd man:no didn see it yet.
1st man:he is some efi.
2nd man:efi,what those that mean?
1st man:it means emotionally fucked-up individual.
2nd man:got ya now.
by Joey Colclough May 20, 2008
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Horny but for food
Bro im hella efi for some McDonald's rn
by Ragebalde181 December 29, 2021
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