Sizeable/ˈsaɪzəbl/ Definition 1 of 1Pro Tip 1/3Quantifying Importance Use 'sizeable' to indicate that something is large enough to be noticed or have an effect. Winning the lottery had a sizeable impact on his lifestyle. Pro Tip 2/3Not Literal Size 'Sizeable' can refer to non-physical things like amounts of time or money. She donated a sizeable sum to the charity. Pro Tip 3/3Subjective Measure What's considered 'sizeable' can differ depending on personal perspective or context. A sizeable portion of the audience disagreed with the speaker.