1. 窒息的：15. foamy 泡沫似的 | 1. stifled 窒息的 | 2. mushy 软糊状的

2. 困：孤芳 Narcissism | 困 Stifled | 迹 Trace

3. 堵：stickup /突出的/竖领的/粘贴的/竖领/强盗/抢劫者/粘贴/ | stifled /堵/ | stifling /令人窒息的/发闷的/无聊的/

adj

1. held in check with difficulty

e.g. a smothered cough
a stifled yawn
a strangled scream
suppressed laughter

Synonym: smotheredstrangledsuppressed