Tremendous/trəˈmendəs/ Definition 1 of 3Pro Tip 1/3Intensity Scale Use 'tremendous' to compare with big things, implying it's even bigger or more intense. The earthquake had a tremendous impact on the city. Pro Tip 2/3Subjective Evaluation 'Tremendous' often reflects the speaker's impression that something is remarkably large. To the child, the mountain seemed tremendous. Pro Tip 3/3Positive Emphasis Can emphasize positive aspects, making something sound impressive or impactful. Her contribution to the project was tremendous.