- 1[intransitive] (+ adv./prep.) (informal) to make a long or difficult journey, especially on foot I hate having to trek up that hill with all the groceries.
- 2 go trekking [intransitive] (+ adv./prep.) to spend time walking, especially in mountains and for enjoyment and interest We went trekking in Nepal. During the expedition, they trekked ten to thirteen hours a day.
NAmE//trɛk//Verb Forms present simple I / you / we / they trek
he / she / it treks
past simple trekked
-ing form trekking