急かす

せかす · sekasu · JLPT N1 · verb-godan

to hurry

⏰ 急ぐ (isogu, to hurry) + かす (causative ending) = make someone else hurry

急かす takes the root of 急ぐ (hurry) and adds the causative ending かす, so it means to make another person hurry, not to hurry yourself.

急 — heart radical 心 + 及 (reach)
A semantic-phonetic compound: the heart radical 心 supplies the meaning (an emotional state) while 及 ('to reach, catch up') gives the sound. Originally it depicted a racing, anxious heart — hence the modern senses 'urgent,' 'hurried,' and 'impatient.'

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