Modifies a noun

• effect: Sex, however, is unique in having a soporific effect.

• state: The effect of his playing on myself and others was to produce a very calm, almost soporific state.

• quality: Crisp white Egyptian bed linen, delicious duvets and bouncy cushions lend each enormous bed a truly soporific quality!

• value: A nation's preparations for war can either be highlighted for effect or downplayed for soporific value.

Modifying Another Word

• almost: The effect of his playing on myself and others was to produce a very calm, almost soporific state.

• somewhat: The problem is that all the tracks are extremely similar and this can begin to have a somewhat soporific effect.

• quite: Engine noise is minimal with only a slight and quite soporific vibration.