1.d. 気後れ (kiokure: spirit + to lag behind) means “timidity.”
2.e. 場後れ (baokure: location + to lag behind) means “stage fright.”
3.d. 心後れ (kokoro-okure: heart + to lag behind) means “timidity.”
4.a. 後顧 (kōko: after + to look back) means “looking back, worry, anxiety.”
5.c. 後ずさる (atozusaru: after) means “to draw back, to step back, to shrink away.”
6.c. 後込み (shirigomi: after + included) means “to draw back, to step back, to shrink away.”
Shirigomi is more commonly written as 尻込み (buttocks + included).
7.b. 後顧の憂い (kōko no urei: later + to look back + to grieve) means “anxiety about those left behind after one is gone, anxiety about the future.”