This is the 7052nd most frequent Russian word.
безопасные
Safe
In this sentence, 'безопасные' is an adjective modifying the noun 'игрушки', meaning that the toys are described as safe.
Детские игрушки должны быть безопасные для детей.
Children's toys should be safe for kids.
Here, 'безопасные' indicates that the medications possess the quality of being harmless under certain conditions.
Эти лекарства безопасные при правильной дозировке.
These medications are safe when used in the correct dosage.
Although the sentence uses 'безопасный' in its singular masculine form, it shows how the adjective changes form to agree with the noun's grammatical gender, number, and case.