the worthless word for the day (Apr. 8) is: flappable

[back-formation from unflappable (1968)]
lacking self-assurance and self-control: easily upset
(a lost positive of the 2nd kind: jocular)

"The existence of back-formed words such as flappable
from unflappable. In the word-based hypothesis, this
would have to be formed by the prefixation of un- to
an already existing flappable, which contradicts its
back-formation origin."
- Pavol Stekauer, English Word Formation (2000)
(the theory being that unflappable was formed
out of whole cloth; i.e., un- + flap + -able)

""Now that," said Milo.. "is what I call a shrink.
Unflappable, soft-spoken, analyzing everything."
"I don't qualify?"
"You, my friend, are an aberration."
"Too flappable?""
- Jonathan Kellerman, Therapy (2005)

"I'm the sort of flappable American who leaves
everything until the last minute."
- Benjamin Cheever, Strides (2007)