perhaps

• adv.おそらく;(不確かさを表す)多分;(概算として使われる)多分;(消極的な同意または実際の不賛成を表す)多分; おそらく
• n. 前提；推測；不確実性

語源はラテン語のper、by virtue of、by rely on、hap、chance、luck、語源はhappy、happyと同じ。

perhaps

perhaps: [16] The phrase by hap or by haps ‘by chance’ originated in the 14th century (hap ‘chance’, a borrowing from Old Norse, now survives in the derived happen). In the 16th century it was transformed into perhaps on the model of perchance [14] and the now obsolete percase [14], both borrowings from Anglo- Norman containing per ‘by’.
=> happen, happy

perhaps (adv.)

1520s, formed from Middle English per, par "by, through" (see per-) + plural of hap "chance" (see happen), on model of peradventure, perchance, etc. which now have been superseded by this word. Perhappons "possibly, by chance" is recorded from late 15c.

1. The horrors he experienced are imprinted， perhaps indelibly，in his brain.

彼が経験したテロ事件は彼の頭の中に深く刻まれており、おそらく消し難い印かもしれない。

2.He was not perhaps physically the strongest in the class.

彼はクラスで一番体が丈夫ではないかもしれない。

3. Perhaps he 'd followed her suggestion of a stroll to the river.

彼女のアドバイスに従って川辺を散歩したかもしれない。

4. Perhaps you would like to pay a visit to London.

もしかしたら、喜んでロンドンを観光してみてください。

5.Andy 's face paled with disappointment ; perhaps with anger as well.

アンディの顔色は失望によって青白くなり、怒りも混じっているかもしれない。