不然，各说各话，就成了永远说不清的阴谋论廖。

sense·less  (sĕns′lĭs) adj. 1. Lacking sense or meaning; meaningless. 2. Deficient in sense; foolish or stupid. 3. Insensate; unconscious. sense′less·ly adv. sense′less·ness n.

The American Heritage® Dictionary of the English Language, Fourth Edition copyright ©2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. 

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senseless (ˈsɛnslɪs)

adj

1. lacking in sense; foolish: a senseless plan.

2. lacking in feeling; unconscious

3. lacking in perception; stupid

ˈsenselessly adv ˈsenselessness n

Collins English Dictionary – Complete and Unabridged © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003

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sense•less (ˈsɛns lɪs) 

adj.

1. destitute or deprived of sensation; unconscious.

2. stupid; foolish.

3. lacking meaning; nonsensical.

[1550–60]

sense′less•ly, adv.

sense′less•ness, n.

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc.

这里确实找不到丧心病狂之类的意思。