Front

Sumptuous

Back

Luxurious; costly

Front

Synonymous

Back

Expressing the same idea

Front

Tedious

Back

Boring

Front

Tentative

Back

Not yet finalized

Front

Translucent

Back

Permitting some, but not all light to pass through

Front

Trivial

Back

Of little importance or value

Front

Ubiquitous

Back

Being everywhere at once

Front

Unprecedented

Back

Never before known or experienced

Front

Validate

Back

To prove or declare valid

Front

Viability

Back

Ability to be done in a practical or useful way