take aback vs blow out of the water

take aback and blow out of the water both are verbs.

Word	Noun	Adjective	Verb	Adverb
take aback	No	No	Yes	No
blow out of the water	No	No	Yes	No

As verbs, take aback and blow out of the water are synonyms defined as:

take aback and blow out of the water: surprise greatly; knock someone's socks off

Other synonyms of take aback include ball over, floor, shock.

take aback (verb)	blow out of the water (verb)
surprise greatly; knock someone's socks off	surprise greatly; knock someone's socks off