The term 'hard to bear' can be described in three different ways: ONEROUS, PAINFUL, and STRESSFUL. ONEROUS means difficult or burdensome, and is usually used to describe a task that requires a lot of effort. PAINFUL refers to something that causes physical or emotional suffering. Lastly, STRESSFUL means causing mental or emotional strain. All three words accurately describe the term 'hard to bear, ' which can refer to any situation that is difficult to cope with.