Antonyms of adj unsurprising

1 sense of unsurprising

Sense 1
unsurprising (vs. surprising) -- (not causing surprise)

surprising (vs. unsurprising) -- (causing surprise or wonder or amazement; "the report shows a surprising lack of hard factual data"; "leaped up with surprising agility"; "she earned a surprising amount of money")
        => amazing, astonishing -- (surprising greatly; "she does an amazing amount of work"; "the dog was capable of astonishing tricks")
        => startling -- (so remarkably different or sudden as to cause momentary shock or alarm; "Sydney's startling new Opera House"; "startling news"; "startling earthquake shocks")
        => stunning -- (causing great astonishment and consternation; "the strike came as a stunning protest against management"; "a stunning defeat")

Similarity of adj unsurprising

1 sense of unsurprising

Sense 1
unsurprising (vs. surprising) -- (not causing surprise)
          Also See-> expected#1