Here are a few 5 letter words ending in "id" :
-acid
-amid
-arid
-avid
-band
-braid
-braid
-canid
-david
-fluid
-guild
-grid
-hydid
-livid
-lunar
-solid
-valid
-vivid
-walid
Please note that this list is not exhaustive and there may be other words that fit this criteria.