Definition of 良く (よく)
よ
                        良く
よく
yoku
Common word
adverb
1.
2.
frequently, often(usually kana)
3.
I'm glad that you ..., thank you for ...(usually kana)
4.
(you have) quite the nerve to, I don't know how you can ...(usually kana)
Other readings:
                よく《善く》
、よく《能く》
、よく《好く》
、よく《克く》
                Related Kanji
| 良 | good, pleasing, skilled | 
| 善 | virtuous, good, goodness | 
| 能 | ability, talent, skill, capacity | 
| 好 | fond, pleasing, like something | 
| 克 | overcome, kindly, skillfully |