i Register
In some senses, acquire is marked as US. Watch for register when choosing this word.
verb
To get.
To gain, usually by one's own exertions; to get as one's own.
to acquire a skill
to acquire decent habits and manners
To become affected by an illness.
To sample signals and convert them into digital values.
To begin tracking a mobile target with a particular detector or sight, generally with the implication that an attack on the target thereby becomes possible.