Sentence:  Claude Monet was in two minds about it, cursing it from his room in the Savoy in 1899 for blotting out the fugitive sun. Yet by far the strongest of his paintings – completed in a studio a long, long way from the Thames – were the greeny-grey early-morning images of crowds tramping and <WSD>omnibussing</WSD> their way to work over hostile bridges, unblessed by even a hint of watery sunshine. 
Meaning of the word marked with <WSD> tags:  To travel or be transported by omnibus.