I . v. a.
1.
Perceive, apprehend, comprehend, understand, discern, be aware of, be assured of, be sure or certain of, see through, make out.
2.
Recognize.
3.
Be acquainted with, have an acquaintance with, be familiar with.
4.
Distinguish, discriminate.
5.
( Psychol. ) Cognize.
II . v. n.
1.
Have ~ledge, cognize, exercise cognition.
2.
Be informed, be made aware.
3.
Be sure, feel certain.