Word: poignant
Meaning:

1. keenly distressing to the feelings: poignant regret
2. keen or strong in mental appeal: a subject of poignant interest
3. affecting or moving the emotions: a poignant scene.
4. pungent to the smell: poignant cooking odours.
5. (Random House Unabridged Dictionary)

Synonyms: intense, bitter, heartfelt

Word: adroit
Meaning:

1. expert or nimble in the use of the hands or body
2. cleverly skillful, resourceful or ingenious: an adroit debater
3. (Random House Unabridged Dictionary)

Synonyms: skillful, clever, apt, deft

Word: loiter
Meaning:

1. To stand idly about; linger aimlessly
2. To proceed slowly or with many stops: loitered all the way home.
3. To delay or dawdle: loiter over a task.
4. (The American Heritage Dictionary of the English Language)

Synonyms: waste time, wait, linger
Usage: The high school students like to loiter in the Central Square.