キープ

1. 1to keep (e.g. the lead) ; to maintain (a standard, situation, etc.) Translated by Jiyomi
2. 2to put aside (for someone) ; to save (e.g. a seat) Translated by Jiyomi
3. 3to keep (the ball; in soccer, rugby, etc.) ; to retain possession Translated by Jiyomi
4. 4to hold service (in tennis) Translated by Jiyomi
5. 5person one is dating while hoping for someone better Translated by Jiyomi

JMdict entry 1040870 · frequency rank 70. Source and licence.