Attain

v.capable, hopefulformal

What it means

To succeed in reaching a valued goal, standard, or level.

Reach for it when describing an outcome reached through directed effort

The apprentices trained for months to attain the required level of precision.

everyday
achieve
completing a goal is the straightforward point
not when Achieve suits an accomplishment, while attain more naturally marks a level or state reached.
everyday
reach
plain language should emphasize arrival at a target
not when Reach can describe physical contact or communication without any achievement.
warm
earn
effort or merit justifies the result
not when Some attainable conditions, such as calm or balance, are reached rather than earned.
professional
accomplish
a defined task has been completed successfully
not when Accomplish fits work done better than a status or degree gained.
professional
master
skill has reached a high level of control
not when Master claims thorough command and overstates merely attaining a threshold.
professional
secure
competition or negotiation results in possession
not when Secure implies obtaining or protecting something, not developing an ability.
formal
realize
a plan or aspiration becomes real
not when Realize is ambiguous because it also means becoming aware.

attain a goal
The group can attain a goal faster when each member owns a clear step.
attain mastery
Daily deliberate practice helped the violinist attain mastery of the passage.
attain the standard
Every repaired unit must attain the standard before it returns to service.
attain independence
Reliable transport helped several residents attain independence.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.