tard- +

(Latin: slow; sluggish)

tardiloquous
A reference to being slow in speech.
tardily
1. Later than usual or than expected.
2. Without speed, belatedly or late.
3. With a slow pace or motion.
tardiness
1. The quality, or habit, of not adhering to a correct, usual, or expected time.
2. Lateness; such as, the tardiness of witnesses or jurors in attendance; or the tardiness of students in attending their classes.
tardive
1. Characterized by lateness or delay; said especially of a medical condition with late-emerging signs and symptoms.
2. Etymology: from French, tardif; assumed to be from Vulgar Latin tardivus, "slow"; from Latin tardus, "slow" + ivus, -ive, "late in coming, tardy".
tardo
Slowly, a musical direction.
tardy
1. After the expected or usual time; delayed.
2. Late; behind time; not on time.
2. Moving, or acting, slowly; slow; sluggish.
3. Delaying some kind of action because of reluctance to do it.
4. Occurring, arriving, acting, or doing something after a scheduled, expected, or usual time; late.
tarrier
1. Someone who leaves slowly and hesitantly.
2. Anyone who delays leaving or moving onward.
tarry
1. To leave slowly and hesitantly.
2. To delay a departure or arrival; especially, in an idle way.
3. To wait in expectation of someone or something.
4. To delay or to postpone starting or acting; to linger.
You may strive to be like them, but seek not to make them like you.
For Life goes not backward nor tarries with yesterday.
You are the bows from which your children, as living arrows, are sent forth.
—Khalil Gibran (1883-1931), Prophet
tarryingly
1. A reference to delaying, staying, or waiting.
2. Relating to a short stay or a sojourn.
3. Characterized by being smeared with tar.

Cross references directly, or partly, involving "slow, slowness, slow of, sluggish": dys-; lent-.