5週1日目 信じがたい
Evaluation・cause・basis
接続：V-stem＋にくい
difficult to do due to its objective nature
注意 / Note：がたい tends to be difficult to accept in terms of psychology and writing; にくい is difficult to be objective; づらい is difficult because of emotions or situations.
比較 / Compare：Same song: 〜がたい／〜づらい. These models are often mistakenly chosen for each other — carefully read the 接続 and nuances above and then decide.
よく出る形 / Common form：動ます形＋にくい。OBJECTIVE reason, lies in the thing itself: 読みにくい字・割れにくいガラス. The antonym is 〜やすい.
この字は読みにくい。
This word is difficult to read.
この靴は歩きにくい。
These shoes are difficult to walk in.
この容器はふたが開けにくい。
This box's lid is difficult to open.