1 although. "he was making headway, albeit rather slowly."

DEEP-POCKETED 
1- Having a great deal of money; being wealthy.
The deep-pocketed businessman donated a large sum of money to the charity. 
DISAGREEABLE 
1- Having a disposition that is not pleasant or agreeable; disagreeable behavior or remarks.
“I’m sorry I was so disagreeable earlier. I had a really bad day.” 
DILAPIDATED
1 – fallen into decay or deteriorated
The dilapidated home needed an intense amount of love and care.
DECORATIVE
1 – serving for ornamental decoration.
The decorative replica was made to be displayed. And invoked a strong emotion.
DIVERGENT
1 – moving from the common direction.
Do follow the popular path. Instead, go into the unknown, and discover your divergent path.
COMPASSIONATE 
1 – Showing concern and sympathy for others, especially those in distress.
When I saw the homeless man on the side of the road, I felt compassion for him and wished I could help him. 
ENTERTAINING 
1 – A movie that is enjoyable and amusing.
The new comedy starring Melissa McCarthy was very entertaining. 
ELUSIVE
1 – hard to pin down, identify, or isolate.
They knew the elusive thief lurked nearby.
EXUBERANT
1 – enthusiastic joy
They were exuberant about their upcoming trip to some of the most beautiful places in the world.
ERECT
1 – vertical position
Few erect columns were peppered throughout the temple ruins.
EXPANSIVE
1 – having the ability to expand.
The expansive landscape is seemingly never-ending.
ECLECTIC
1 – deriving style, ideas, and taste from a wide range of sources.
The eclectic mix of opinions caused an argument.
EXASPERATING
1 – cause a strong feeling of annoyance
The planes exasperating delay made everyone late.
ELABORATE
1 – fully detailed or well planned.
The elaborate design of Bangkok’s royal palace is breathtaking.
EMPHATIC
1 – uttered, or emphasizing on.
The emphatic refusal helped them close the deal.
EFFICIENT
1 – productive / desired effects.
The efficient writer finished before the deadline.
2 – being involved or an immediate agent.
The efficient action helped make a change.
EVER-DEEPENING
1 – go deeper
He had an ever-deepening love for sports.
EXHAUSTIVE
1 – thorough / all possibilities
The exhaustive to-do list was intimidating.
ENDLESS
1 – seemingly without end
The endless forest instilled a mood of tranquility.
EXTRAVAGANT
1 – exceeding normal limits or excessively elaborate
The extravagant building is grand.
2 – extremely high in price
The extravagant purchase maxed out his credit card purchase.
ELEGANT
1 – elegance
The elegant clothes belonged to the king.
EPONYMOUS
1 – relating to or named after
The eponymous landscape outside Dingle is one of the best places to visit in Ireland.
FESTIVE
1 – relating to a celebration, festival, or feast.
The festive dinner got a little out of hand.
FLUSHED
1 – tinged with red in the face, from shame, heat, or physical exertion.
Caught in a lie, his face became flushed with embarrassment.
FERVENT
1 – very hot or passionate desire.
I have a fervent desire to explore the world.
FAST-MOVING
1 – moving quickly
The fast-moving current washed away our supplies.
FANTASTICAL
1 – based on fantasy
Game of Thrones takes place in a fantastical world, filled with dragons, and magic.
FEROCIOUS
1 – unrestrained violence or brutality
The ferocious lion hunted his prey.
FUNERARY
1 – having to do with the burial.
They found treasure in the Pharaoh’s funerary chamber.
FIXATED
1 – focused on something.
The dog was fixated on the squirrel.
FUN-LOVING
1 – loving having fun.
The fun-loving locals love putting on their annual festival.
GRASSY
1 – covered with grass
The grassy knolls are stunning.
GALORE
1 – a large number of
He had charm galore.
GRUESOME
1 – repulsion, or inspiring horror.
The movie was too gruesome for me.
GLORIOUS
1 – possessing glory
When backpacking New Zealand you see glorious landscapes.