?无防备
... defenselessly adv无防备地 defenselessness n无防备；不设防 defensibility n可防御性 ...
?不设防
?无防守
... openness直率 defenselessness无防守 helplessness无可奈何 ...
The Russian president has explicitly endorsed the value of a world of defense, not of defenselessness for the American people and his own.
CENTERFORSECURITYPOLICY: Center For Security Policy
词根：defend
adj.
defensive自卫的；防御用的
defending卫冕的；防御中的；防守型的
defensible可防御的；可辩护的；可拥护的
defenseless无防备的
defenceless（英）无防御的；无保护的
defendable可防御的
adv.
defensively防御地；守势地
n.
defense防卫，防护；防御措施；防守；vt. 谋划抵御
defence防御；防卫；答辩；防卫设备
defensive防御；守势
defender防卫者，守卫者；辩护者；拥护者；卫冕者
defensiveness防御；防御性
defensibility防卫的可能性；可防御性
v.
defending防护；防卫（defend的ing形式）
vi.
defend保卫；防守
vt.
defend辩护；防护
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。