I would say depends on the action of the button. When dealing with calls to action (CTA), your main goal is to communicate action to a user, as this article outlines on writing effective CTAs, which means:
The very first piece of advice from the classic Writing Tools book
encourages writers to start sentences with subjects and verbs. in the
English language, we read from left to right, and verbs and subjects
help us quickly glean the meaning of a sentence. As basic as these
the facts can be, recognizing this when developing your online
the call to action is crucial when the attention of readers is more
elusive as the shadow of a flying bird.
By not including a verb in the CTA copy, you are not inviting readers
take action, which can adversely affect your clickthrough rate
call to action and negative impact on conversions.
In fact, verbs are part of
speech that generates the most shares on Twitter, than HubSpot Social
Media scientists Dan Zarrella reported in his Social Media Science
research. It turns out that verbs beat adverbs, adjectives and nouns
in terms of their potential to attract Twitter shares!
I also recommend consulting this article for additional information on why CTAs should be direct and should start with a verb.
Be direct: Your website is not the place to beat around the bush. It is imperative that you let your visitors know exactly what you are doing
and exactly what you'd like them to do. Visitors should not have to
think what to do next; be clear with your guidelines: "sign up"
"Download", "submit", "start".
Be demanding: Your CTA must always have an action (duh). But make sure your action is short, simple and strong, to the point
to be demanding. Say exactly what you want the potential customer
do: "download", "watch", "buy". Avoid weak words than everyone else
website uses, like "click", "get", "view" or "try".
However, if you are dealing with buttons that are just affirmative in nature, here's what Microsoft has to say:
- Start the labels with an imperative verb and clearly describe the action the button performs. Do not use end punctuation.
Exception: The following standard labels are accepted without verbs: Advanced, Previous, Details, Next, Less, More, New, Next, No,
OK, Options, Back, Properties, Settings and Yes.