Definition of "sheepishly"

Renton’s big mistake is sheepishly to offer Sick Boy his stolen share 20 years on: £4,000 in a crumpled brown envelope. “What am I supposed to buy with that?” rages Sick Boy bitterly later. “A time machine?”

2017 January 19, Peter Bradshaw, “T2 Trainspotting review – choose a sequel that doesn't disappoint”, in the Guardian‎