hapless
词根词缀：
haphazard adj. 偶然的；无计划的
hap 机会；运气 + hazard 冒险 → 运气和冒险都是偶然的、没有计划的 → 偶然的；无计划的
hapless adj. 运气不好的
hap 机会；运气 + less 无…的 → 无运气的 → 运气不好的
happen v. 发生
happ〔= hap〕机会；运气 + en 使… → 使成为机会 → 发生
happy adj. 幸运的；幸福的
happ〔= hap〕机会；运气 + y …的 → 有运气的 → 幸运的
mishap n. 不幸，灾祸
mis 坏 + hap 机会；运气 → 坏运气 → 不幸
perhaps adv. 也许，可能
per 自始至终 + hap 机会；运气 + s → 全由机会〔决定〕→ 也许
数据来源：新东方英语词汇速记大全
相关例句：
And, like hapless mice, they look for the thing that makes them happy& cheese.
如同那些倒霉的老鼠，它们寻找着让自己快乐的东西&奶酪。
If it is honest journeywork, yet lacks purchasers, at most you may call yourself a hapless tradesman.
假如那是诚实的临时工作，但却缺少买主，那你至多可以说自己是个不幸的工匠。
Troopers hustle the hapless duty guard to Norton's door as he fumbles nervously with a huge key ring.
州警把倒霉的值班警卫推到门前，他发抖着摸出一大串钥匙。
It might feel like you're attending to the speeding car and the hapless child at the same time, but it's just consciousnesses up to its old tricks.
也许是感到你在同时注意急驶的汽车和不幸的儿童，可是这仅仅是意识在进行它的老把戏。
He's has been compared to both Joseph Stalin and the hapless comedy character Mr Bean.
他被比喻为既是约瑟夫？斯大林，又是那倒霉的喜剧人物憨豆先生。
Pockets of hapless enemy soldiers are caught up here and there in the hubbub and excitement, huddling fearfully amid a scene of indescribable horror.
一群群不幸的敌军士兵在一片嘈杂和激动声中到处被抓，他们在这难以形容的恐怖场面中害怕得挤成一团。