Found 2 items, similar to effortful.
English → English (WordNet) Definition: effortful effortful adj : requiring great physical effort [ant: effortless]
English → English (gcide) Definition: effortful effortful \effortful\ adj. 1. requiring great physical effort. Opposite of effortless. [Narrower terms: {arduous, backbreaking, back-breaking, grueling, gruelling, hard, heavy, laborious, labourious, punishing, slavish, strenuous, toilsome}; exhausting, tiring, wearing, wearying ] Also See: difficult, hard. [WordNet 1.5]