leaven

In lang=en terms the difference between suffuse and leaven

is that suffuse is to spread through or over something, especially as a liquid, colour or light; to perfuse while leaven is to cause to rise by fermentation.

In figuratively|lang=en terms the difference between suffuse and leaven

is that suffuse is (figuratively) to spread through or over in the manner of a liquid while leaven is (figuratively) to temper an action or decision.

As verbs the difference between suffuse and leaven

is that suffuse is to spread through or over something, especially as a liquid, colour or light; to perfuse while leaven is to add a leavening agent.

As a noun leaven is

any agent used to make dough rise or to have a similar effect on baked goods.

As a noun leaven

is any agent used to make dough rise or to have a similar effect on baked goods.

As a verb leaven

is to add a leavening agent.

As an adjective leavenous is

containing leaven.

As verbs the difference between leaven and overleaven

is that leaven is to add a leavening agent while overleaven is (obsolete) to leaven too much.

As a noun leaven

is any agent used to make dough rise or to have a similar effect on baked goods.