Longman Dictionary of Contemporary English - sentimental

~ adj 1 someone who is sentimental is too easily affected by emotions such as love, sympathy, sadness etc  (There's nothing wrong with being a little sentimental!) 2 based on or connected with your feelings rather than on practical reasons  (for sentimental reasons/purposes)  (I only keep these old photos for sentimental reasons.) 3 sentimental value if something has sentimental value, it is not worth much money, but it is important to you because it reminds you of someone you love or a happy time in the past  (The stolen rings were of great sentimental value to the owner.) 4 a story, film, book etc that is sentimental deals with emotions such as love and sadness in a way that seems silly and insincere  (I enjoyed the movie but the ending was too sentimental.) - sentimentally adv