extremely as in to a high degree or extent

• "favorably or with much respect"
• "highly successful"
• "He spoke highly of her"
• "does not think highly of his writing"
• "extremely interesting"

Synonyms

• highlyto a high degree or extent; at a high rate or wage; in a high position or level or rank

extremely as in to an extreme degree

• "extremely cold"
• "extremely unpleasant"
• "she is super smart"
• "the night was deathly cold"
• "as a child, I was deathly afraid of snakes"

Synonyms

• exceedinglyto an extreme degree
• superto an extreme degree; a caretaker for an apartment house; of the highest quality; including more than a specified category; extremely large
• deathlyto a degree resembling death; to an extreme degree; having the physical appearance of death; causing or capable of causing death