Explanation
Express the least one can do; 'at least', 'the least', 'no less than'.
Formation
Verb-casual (non-past) + くらい + は + Verb-casual (negative), Adjective (non-past) + くらい + は + Adjective (negative)
Detailed explanation
The ～くらい～は～ない grammar point is used to emphasize the minimum expectation in a situation or the least one can do. It can be translated as 'at least', 'the least', or 'no less than' in English. The formation differs depending on whether it is used with a verb or an adjective.
Examples
Shuu ni ichido kurai wa jimu ni ikanai to.
I have to go to the gym at least once a week.
Mainichi kurai wa ha wo migakanai to.
I have to brush my teeth at least every day.
Kono mondai kurai wa kaiketsu shinai to.
I have to solve at least this problem.
Kanojo ga naite iru kurai nara nagusamenai to.
If she is crying that much, I should at least try to comfort her.
Practice
Grammar content sourced from hanabira.org.