Anything that you could possibly use for food is a comestible

A malleable personality is capable of being changed or trained

The noun excommunication is a formal way of describing what happens when someone gets kicked out of his or her church.

Something incontestable can't be argued with — it's absolutely true or right. 

Use the word deadpan to describe someone who uses no expression when speaking.

You can filch money, time, and stuff, but I wouldn't recommend it. 

Awe is a feeling of fear that is mixed with respect and wonder. 

Aqua is a greenish-blue color, often thought of as the shade of water. 

To do something valiantly is to do it bravely and with valor. 

Expedient describes something that provides an easy way to achieve a goal or result, but it's not necessarily a moral solution.

A brood is a group of young born at the same time, but your parents might use the word for you and your siblings.

Grouse means to gripe about how unhappy you are.

 Remiss is failing in what duty requires

Metabolism is the process occurring in living organisms

A voucher is a certificate or document that either allows you to purchase something or proves that you paid for something. 

Something that's atmospheric is related to a planet's atmosphere.

A recessive gene is a gene that gets trumped by a dominant gene.

Insalubrious is a formal way to say something is bad for your health. 

You can use retention to mean the ability to keep or hold.

An eon is a really, really, super-long, impossible-to-measure length of time.