Histrionic
The word is loquacious.
Nervous
"Devoted" means being loyal, dedicated, and committed to someone or something. It implies a strong sense of care and devotion towards a person, cause, or activity.
the person is overly pessimistic
"schmaltzy", . "bathetic" , "mushy". "soppy". 'soupy" , "hokey" and "kitschy" are some. "maudlin" and "mawkish" are not slang but have this meaning. .
This is not an English word.HYPOtension, however, is a word and it means overly low blood pressure - "hypo" means low and "tension" means pressure
overly complicated = complex
He devoted his life to his work.
The word "devoted" in Tagalog is "mapagmahal."
allergy
unsure means not positive. SO the opposite(antonym) is... (bum Bum BUM) positive.