Teacher's praise bolstered student's confidence.
Meaning: The teacher's words of appreciation and admiration helped the student to feel more self-assured and capable.
Choice of Words: Bolstered means to make something stronger or to give it more support. Confidence means the feeling of being sure of yourself and your abilities. When you put them together, it means that the teacher's praise made the student feel more sure of themselves and their abilities.
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Related Expressions