(每日一词）flounder

Flounder /ˈflaʊn.dɚ/ v. 困难重重；艰苦挣扎；不知所措

meaning: to experience great difficulties or be completely unable to decide what to do or say next 

1) 联想：fl- + founder 

2) 联想：fl- 扑腾，拍打(fly, flutter) + founder 创始人

e.g. Although his business was a success, his marriage was floundering. 他虽然事业有成，可婚姻却陷入了困境。