The word "study at restrain" is a term that refers to an individual's focus and concentration in learning while limiting oneself or being held back in some way. Synonyms for this phrase may include "cram with moderation," "learn with limits," "concentrate with constraint," or "focus with control." These phrases suggest an element of self-discipline or external restraint that has a positive effect on the learning process. By working within boundaries, individuals can achieve a greater sense of clarity, accomplishment, and mastery over their subject matter. While studying with restrain may sound limiting, it can actually lead to more effective and efficient learning.