Definition of "ponderously"

Rooney and his team-mates started ponderously, as if sensing the enormity of the occasion, but once Scholes began to link with Ryan Giggs in the middle of the park, the visitors increased the tempo with Sunderland struggling to keep up.

2012 May 13, Alistair Magowan, “Sunderland 0-1 Man Utd”, in BBC Sport‎

A narrow and deserted street in deep shadow, high houses, innumerable windows with Venetian blinds, a dead silence, grass sprouting between the stones, imposing carriage archways right and left, immense double doors standing ponderously ajar.

1899 February, Joseph Conrad, “The Heart of Darkness”, in Blackwood’s Edinburgh Magazine, volume CLXV, number M, New York, N.Y.: The Leonard Scott Publishing Company, […], part I, page 199