Anagrams of: UNGRAMMATICAL

• of or pertaining to grammar

• conforming to the rules of grammar or usage accepted by native speakers

• crowd or pack to capacity

• put something somewhere so that the space is completely filled

• study intensively, as before an exam

• prepare (students) hastily for an impending exam

• burrowing marine mollusk living on sand or mud; the shell closes with viselike firmness

• a piece of paper money worth one dollar

• flesh of either hard-shell or soft-shell clams

• gather clams, by digging in the sand by the ocean

• morally blemished; stained or impure

• spotted or blotched

• make dirty or spotty, as by exposure to air; also used metaphorically

• spot, stain, or pollute

• dry brandy distilled in the Armagnac district of France