〜士(し)

し

suffix

qualified professional; -ist (suffix)

1. qualified professional; -ist; licensed specialist

Suffix attached to a noun to name a certified or licensed professional. Implies the field requires a formal qualification or examination.

弁護(べんご)士(し)に相談(そうだん)した。

I consulted a lawyer.

予報(よほう)士(し)になるためには試験(しけん)に合格(ごうかく)しなければならない。

To become a forecaster, you have to pass an exam.

祖父(そふ)は長年(ながねん)税理(ぜいり)士(し)として多(おお)くの会社(かいしゃ)を支援(しえん)してきた。

My grandfather worked for many years as a tax accountant supporting many companies.

Suffix forming occupational names for licensed or certified professionals. Carries a connotation of formal qualification — distinct from 〜家(か) (which emphasizes expertise or dedication) and 〜者(しゃ) (a generic 'person who does').

Compounds

弁護(べんご)士(し): lawyer
会計(かいけい)士(し): certified public accountant
税理(ぜいり)士(し): tax accountant
予報(よほう)士(し): weather forecaster (certified)
栄養(えいよう)士(し): dietitian
保育(ほいく)士(し): licensed childcare worker
建築(けんちく)士(し): licensed architect

Similar words

〜家(か): expert; -ist — emphasizes serious pursuit, no formal license required (芸術(げいじゅつ)家(か) artist)
〜者(しゃ): -er; person who — neutral occupational suffix (記(き)者(しゃ) reporter)
〜師(し): practitioner — for medical and craft fields (医(い)師(し) physician, 美容(びよう)師(し) hairdresser)

general

Added 2026.5.29 12:08 · Revised 2026.9.2 13:02

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