Vocabulary consisting only from characters you are able to read
足りない
たりない
(1)insufficient/not enough/lacking/ (2)dim-witted/slow/one brick short of a full load adj
耳にする
みみにする
to hear, to hear by chance, to hear by accident, to catch (the sound)suru
気づく
きづく
to notice/to recognize/to recognise/to become aware of/to perceive/to realize/to realisegodan, verb
見つける
みつける
(1)to discover, to find (e.g. an error in a book), to come across, to detect, to spot, (2)to locate, to find (e.g. something missing), to find fault, (3)to be used to seeing, to be familiar with ichidan, jlpt3, jlpt4, verb, vtrans
やる気
やるき
willingness (e.g. to do something)/eagerness/motivation/inspiration/determination/high aspirationsjlpt3