一生懸命【いっしょうけんめい】
very hard, with utmost effort, as hard as one can, with all one's might, for dear life, eagerly, desperately
懸念【けねん】
worry, fear, anxiety, concern
懸賞【けんしょう】
offering a prize, prize competition, prize, reward
懸命【けんめい】
eager, earnest, strenuous, fervent, assiduous, with utmost effort
懸案【けんあん】
pending question, unresolved problem
懸垂【けんすい】
pull-up (exercise), chin-up, chinning, suspension, dangling, hanging