n. 异想；易变性

[ noun ]
marked strangeness as a consequence of being abnormal
<noun.attribute>

Freakish \Freak"ish\, a.
Apt to change the mind suddenly; whimsical; capricious.

It may be a question whether the wife or the woman was
the more freakish of the two. --L'Estrange.

Freakish when well, and fretful when she's sick.
--Pope.

2. rapidly changing and unpredictable; as, freakish weather.
[PJC]

3. markedly abnormal.

Syn: freaky.
[PJC] -- {Freak"ish*ly}, adv. -- {Freak"ish*ness}, n.

freakishness \freakishness\ n.
marked strangeness or abnormality.

Syn: abnormality.
[WordNet 1.5]