younger woman

• girlYoung female person
• maidenUnmarried young woman
• lassYouthful female
• ingenueArtless young woman
• debutanteFormally introduced young woman

junior · fresh · youthful · nubile · coed · twentysomething · daughter · niece · protégé · apprentice · novice · blooming · vibrant · naive · innocent · aspiring · budding · fledgling

• age-gap romanceage difference, older man, older woman, cougar, silver fox
• romantic tropeslove interest, heartthrob, soulmate, Romeo, Juliet