出典:Wiktionary
Borrowed from Latin repulsus, from repellere (“to drive back”), from re- (“back”) + pellere (“to drive”).
For spelling, as in pulse, the -e (on -lse) is so the end is pronounced /ls/, rather than /lz/ as in pulls, and does not change the vowel (‘u’). Compare else, false, convulse.
repulse (三人称単数 現在形 repulses, 現在分詞 repulsing, 過去形および過去分詞形 repulsed)
repulse (複数形 repulses)