The term SYRINGA BY ANOTHER NAME is a crossword puzzle clue that can be solved with two answers: LILAC (5 letters) and MOCKORANGE (10 letters). Both of these terms refer to flowering shrubs in the Oleaceae family. LILAC is a common name for Syringa vulgaris, a deciduous shrub native to southeastern Europe and Asia. Mockorange is a common name for Philadelphus coronarius, a deciduous shrub native to Europe and western Asia.