slow-footed; slow; plodding
Describes a person, animal, or vehicle that moves slowly. Often used in a slightly derogatory or humorous way.
彼は鈍足だから、いつもみんなより遅れて到着する。
He's slow-footed, so he always arrives later than everyone else.
この
This car is slow, and it's stressful on the highway.
鈍足 describes someone who runs slowly, the direct opposite of 俊足's swift-footedness.
Compound of 鈍 (don, 'dull, slow') and 足 (soku, 'foot, leg'). The exact historical derivation is uncertain, but the word is transparently formed from these kanji meanings.