hobble：足をひきずって歩く Some of the runners could only manage to hobble over the finishing line.
vicissitude：移り変わり、栄枯盛衰 Life is full of vicissitudes.
ebb：潮がひく、弱まる He had the courage to do so because he wanted to be conscious during the last hours of being alive, the gift which was ebbing and fading and could never be again.
bungling：下手な、拙い Nearly all the translations marred by his bungling English and defective rhythm.
onerous：わずらわしい、やっかいな、めんどうな ラテン語の"onus"（荷物）が語源です。 The work has gradually become less onerous than in the early years. 参考 onerous - Wiktionary