enquire

• vi.問い合わせる；調査する；挨拶する（問い合わせるに等しい）
• vt.問い合わせる；尋ねる

en-、入る、作る。-quir、問い合わせる、語源的にはquery、質問と同じ。

enquire

enquire: [13] The -quire element in enquire (or inquire, as it is alternatively spelled) is etymologically related to English query and question. The word comes via Old French enquerre from *inquāerere, the Vulgar Latin descendant of Latin inquīrere. This was a compound verb formed from the intensive prefix in- and quaerere ‘seek, ask’. The modern English spelling with i in the second syllable comes from a 15th-century reintroduction of the vowel of Latin inquīrere. Inquest [13] comes from the Latin verb’s past participle.
=> inquest, query, question

enquire (v.)

alternative form of inquire, according to OED mainly used in sense of "to ask a question." Related: enquired; enquiring.

1. I called the station to enquire about train times.

駅に電話して列車の時刻を尋ねた。

2.They neglected to enquire whether these Methods：Were possible or practicable.

彼らはこれらの方法ができるかどうか、できるかどうかを聞いてみない。

3. We must enquire ( as to ) whether he really came.

本当に来たことがあるかどうか聞いてみなければなりません。

4.If you dare to enquire into Nature,try to discover her laws.

自然に根掘り葉掘り聞く勇気があるなら、その法則を明らかにしよう。

5.She wrote to enquire the cause of the delay.

彼女は手紙を書いて遅延の理由を聞くしかなかった。