A silly or foolish person.
Глупый или глупый человек. (glupyy ili glupyy chelovek)
"Don't be such an airhead, pay attention!"
"Не будь таким глупым, сосредоточься!" (Ne bud' takim glupym, sosredotoch'sya!)
to be aware of potential problems or discrepancies
a sudden and significant progress
to increase one's self-assurance or belief in one's abilitie...
not something one likes or enjoys
secretly; in a sneaky way
extremely happy and excited
