breaks one's back (verb) struggle: labor, work
Sinonime: accuracy, articulateness, brightness, certainty, clearness, cognizability, comprehensibility, conspicuousness, decipherability, definition, directness, distinctness, evidence, exactitude, exactness, explicability, explicitness, intelligibility, legibility, limpidity, limpidness, lucidity, manifestness, obviousness, openness, overtness, palpability, pellucidity, pellucidness, penetrability, perceptibility, perspicuity, perspicuousness, plainness, precision, prominence, purity, salience, simplicity, tangibility, transparency, unambiguity, unmistakability
Antonime: idle, laze,
rest