To think or talk about the past.
Reminisce
Distant and not friendly
aloof
To reveal information that was secret or unknown.
divulge
To speak negatively of something or somebody.
disparage
Calm and unconcerned about things.
nonchalant
To arrive at a decision based on facts.
Conclude
Someone who has rapid mood changes.
volatile
Secret, and usually illegal.
clandestine
To speak admiringly of someone or somebody.
extol
Overly satisfied with your situation.
complacent
To think about things seriously for a short amount of time.
Contemplate
Able to handle any situation.
resilient
Close -mouthed or not talkative.
reticent
To attack someone harshly with words.
lambaste
Upset and annoyed over something unfair.
indignant
To make a guess about the future.
Prognosticate
With care and persistence.
assiduously
Sly or sneaky.
furtive
To dislike someone or something intensely.
loathe
Deeply thoughtful about something that worries you.
pensive
A word, poem or sentence that helps you remember something.
mnemonic
Firm and steady or not changing.
steadfast
Secretive
surreptitious
Recognition or credit for achieving something.
kudos
Sad or lonely.
forlorn