tramp has 24 distinct synonyms spread across 7 of its 10 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
a foot traveler; someone who goes on an extended walk (for pleasure)
a heavy footfall
“the tramp of military boots”
a commercial steamer for hire; one having no regular schedule
travel on foot, especially on a walking expedition
“We went tramping about the state of Colorado”
Synonyms, antonyms and the broader and narrower relations for tramp come from Princeton University’s WordNet. Full sources and licences.
cross on foot
“We had to tramp the creeks”