in.de.fat.i.ga.ble
adj.（形容词）Incapable or seemingly incapable of being fatigued; tireless.See Synonyms at tireless 不懈怠的：不能或看起来不能疲倦的；不知劳累的参见 tireless
来源：Obsolete French indéfatigable 已废法语 indéfatigable from Latin indôfatog3bilis 源自 拉丁语 indôfatog3bilis in- [not] * see in- in- [不] *参见 in-dôfatog3re [to tire out] dô- [intensive pref] * see de- fatog3re [to weary] dôfatog3re [疲倦] dô- [加强语意的前缀] *参见 de- fatog3re [使劳累]
【引伸】
in.defat.igabil.ity 或
in.defat.igableness
n.（名词）in.defat.igably
adv.（副词）
