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 which now have been superseded by this word.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.
〔李〕[per;hap;-s] ad.可能； 或许 ←hap,happ (ON happ)=good luck 好运气