1, 2. Cherish,foster,harbor imply giving affection, care, or shelter to something. Cherish suggests regarding or treating something as an object of affection or as valuable: to cherish a friendship.Foster implies sustaining and nourishing something with care, especially in order to promote, increase, or strengthen it: to foster a hope; to foster enmity.Harbor suggests giving shelter to or entertaining something undesirable, especially evil thoughts or intentions: to harbor malice or a grudge.
early 14c., cherischen, from Old French cheriss-, present participle stem of chierir "to hold dear" (12c., Modern French chérir), from chier "dear," from Latin carus "dear, costly, beloved" (see whore). The Latin word also is the source of Italian, Spanish, Portuguese caro; Old Provençal, Catalan car. Related: Cherished; cherishing.