spontaneous
Irresponsible; careless; impulsive; flighty.
fretful,nervous,apprehensive,overwrought,perturbed,fraught,distraught.
Concerned.
feeling
Insane, mad, unhinged.
A synonym for slow is plodding, sluggish, or inactive.
No such word as "errational". If you meant "irrational" then a synonym would be 'unhinged', 'mad', 'loopy', 'impulsive', 'unreasonable', 'unsound'.
wish, passion, motivation, inspiration, influence, feeling, desire, appeal
foolish, thoughtless, impulsive, daring, fiery
Synonyms would be 'unhinged', 'mad', 'loopy', 'impulsive', 'unreasonable', 'unsound'.
Her niece is not quite precocious; more like impulsive.
The impulsive child went that-a-way.
synonymize
word for word
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The antonym of the word 'synonym' is 'antonym'.
"Alternate word" is a noun-phrase that is kind of a synonym for the word "synonym. There is no one exact word that means the same as synonym.