Flowers for Algernon vocabulary

Front

fooled; led to believe something wrong

Back

mislead

Front

capable of being touched or seen

Back

tangible

Front

to prove to be false

Back

refute

Front

always; without exception

Back

invariably

Front

return to an earlier or less advanced condition

Back

Regression

Front

confirmed as truth or accurate

Back

verified

Front

difficult to understand; partially hidden

Back

obscure

Front

worsening; decline

Back

deterioration

Front

A testable prediction, often implied by a theory

Back

Hypothesis

Front

inward looking; thoughtful

Back

introspective