ask vs ask out

ask and ask out both are verbs.

Word	Noun	Adjective	Verb	Adverb
ask	No	No	Yes	No
ask out	No	No	Yes	No

As verbs, ask and ask out are synonyms defined as:

Other synonyms of ask include invite out, take out.

ask (verb)	ask out (verb)
make a request or demand for something to somebody	make a date
direct or put; seek an answer to
address a question to and expect an answer from
consider obligatory; request and expect
require or ask for as a price or condition
make a date
require as useful, just, or proper