a. 无意义的, 无意思的, 发呆的

Unmeaning \Un*mean"ing\, a.
1. Having no meaning or signification; as, unmeaning words.

2. Not indicating intelligence or sense; senseless;
expressionless; as, an unmeaning face.

There pride sits blazoned on the unmeaning brow.
--Trumbull.
※ -- {Un*mean"ing*ly}, adv. --
{Un*mean"ing*ness}, n.