- 息子【むすこ】 - son, penis 
- ため息【ためいき】 - sigh 
- 息子さん【むすこさん】 - son 
- 寝息【ねいき】 - breathing of a sleeping person 
- 息遣い【いきづかい】 - breathing, respiration 
- 生息【せいそく】 - inhabiting, living 
- 利息【りそく】 - interest (on a loan, deposit, etc.) 
- 消息【しょうそく】 - news (from someone), letter, contact, (someone's) whereabouts, (someone's) movements 
- 窒息【ちっそく】 - suffocation, choking, asphyxia 
- 休息【きゅうそく】 - rest, relief, relaxation 
- 一息【ひといき】 - one breath, time of one breath, pause, break, rest, breather, (doing in) one go, doing without stopping, small amount of effort, a little more effort 
- 喘息【ぜんそく】 - asthma 
- 息切れ【いきぎれ】 - shortness of breath, panting, puffing, running out of steam (of the economy, a project, etc.), losing momentum, loss of efficiency 
- 消息筋【しょうそくすじ】 - informed circles 
- 嘆息【たんそく】 - sigh (of grief, disappointment, etc.), grieving, lamenting, deploring 
- 生息地【せいそくち】 - habitat, home (e.g. of the tiger) 
- 終息【しゅうそく】 - having ended, being resolved 
- 子息【しそく】 - (another's) son 
- 息吹【いぶき】 - breath, sign (of something new and fresh), breath (of spring, fresh air, etc.), vitality 
- 一人息子【ひとりむすこ】 - only son