He stepped outside cautiously, his heart pounding.

Meaning: This sentence describes someone who was being careful and alert as they went outside, with their heart beating fast due to anticipation or fear.

Choice of Words: Cautiously means in a careful and watchful manner. Heart refers to the muscular organ that pumps blood through the body. Pounding means beating rapidly or heavily.

Alternative Expressions

Related Expressions

• He opened the door and stepped inside, his heart pounding.
• His heart was pounding in his chest.
• He ran swiftly, his heart pounding in his chest.
• He cautiously stepped into the shadowy hallway.
• The little boy ran home, his heart pounding.
• He decided to call the police, his heart still pounding with fear.
• Heart pounding, he held his breath, hoping not to be found.
• The brave firefighter rushed into the burning building, his heart pounding.
• We stepped outside, breathing in the fresh, clean air.
• I stepped outside, eager to start my adventure.