[Verse 1: Nayeon, Jeongyeon]
Maeilgachi yeonghwa sogeseona
Chaek sogeseona deurama sogeseo
Sarangeul neukkyeo
Um sarangeul baewo
Nae ilcheoreom jakku gaseumi ttwieo
Dugeundugeungeoryeo seolleime bupureo olla
Um gunggeumhaeseo michil geonman gata

[Pre-Chorus: Mina, Chaeyoung]
Ooh eonjengan naegedo
Ireon iri siljero ireonalkka
Geuge eonjejjeumilkka? eotteon saramilkka?

[Chorus: Sana, Tzuyu]
I wanna know satangcheoreom dalkomhadaneunde
I wanna know haneureul naneun geot gatdaneunde
I wanna know know know know
What is love?
Sarangi eotteon neukkiminji
I wanna know haru jongil utgo itdaneunde
I wanna know sesangi da areumdapdaneunde
I wanna know know know know
What is love?
Eonjengan naegedo sarangi olkka

[Verse 2: Jihyo, Momo]
Jigeum ireon sangsangmaneurodo
Tteoollyeoman bwado
Gaseumi teojil geot gateunde
Um ireoke joeunde
Manil eonjenga jinjjaro naege
Sarangi ol ttae nan ureobeoriljido molla
Um jeongmal gunggeumhae michil geonman gata

[Pre-Chorus: Mina, Dahyun]
Ooh eonjengan naegedo
Ireon iri siljero ireonalkka
Geuge eonjejjeumilkka? eotteon saramilkka?

[Chorus: Sana, Tzuyu]
I wanna know satangcheoreom dalkomhadaneunde
I wanna know haneureul naneun geot gatdaneunde
I wanna know know know know
What is love?
Sarangi eotteon neukkiminji
I wanna know haru jongil utgo itdaneunde
I wanna know sesangi da areumdapdaneunde
I wanna know know know know
What is love?
Eonjengan naegedo sarangi olkka

[Verse 3: Dahyun, Chaeyoung]
Jigeum sesang eoneu gose salgo inneunji
Dodaeche eonjejjeum nawa mannage doelleunji
Eonje eotteoke uriui inyeoneun
Sijakdoelleunji moreujiman neukkimi eojjeonji
Jinjja joeul geot gata waenji
Yeonghwa deuramabodado deo meotjin
Sarangi ol geoya nae yegam eonjena matji
Eoseo natanabwa
Naneun da junbiga dwaetji ready

[Bridge: Sana, Jeongyeon, Nayeon]
(eodi isseulkka) chajanael geoya
(eodi isseulkka) bogo sipeo jukgesseo
Deo isang chameul su eopseul geonman gata

[Chorus: Jihyo, Nayeon]
Satangcheoreom dalkomhadaneunde
Haneureul naneun geot gatdaneunde
I wanna know know know know
What is love?
Sarangi eotteon neukkiminji
Haru jongil utgo itdaneunde
Sesangi da areumdapdaneunde
I wanna know know know know
What is love?
Eonjengan naegedo sarangi olkka

[Outro: Sana, Tzuyu, All]
I wanna know
I wanna know
I wanna know know know know
What is love?
I wanna know I wanna know
I wanna know
I wanna know
I wanna know know know know
What is love?
I wanna know