| amateur | (adjective) engaged in as a pastime | Synonyms: recreational, unpaid |
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| (adjective) lacking professional skill or expertise | Synonyms: amateurish, inexpert, unskilled |
| antitumour | (adjective) used in the treatment of cancer | Synonyms: anticancer, antineoplastic, antitumor |
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| bicolour | (adjective) having two colors | Synonyms: bichrome, bicolor, bicolored, bicoloured, dichromatic |
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| colour | (adjective) having or capable of producing colors | Synonyms: color |
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| dour | (adjective) showing a brooding ill humor | Synonyms: dark, glowering, glum, moody, morose, saturnine, sour, sullen |
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| (adjective) stubbornly unyielding | Synonyms: dogged, persistent, pertinacious, tenacious, unyielding |
| (adjective) harshly uninviting or formidable in manner or appearance | Synonyms: forbidding, grim |
| four | (adjective) being one more than three | Synonyms: 4, iv |
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| multicolour | (adjective) having sections or patches colored differently and usually brightly | Synonyms: calico, motley, multi-color, multi-colored, multi-colour, multi-coloured, multicolor, multicolored, multicoloured, painted, particolored, particoloured, piebald, pied, varicolored, varicoloured |
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| sour | (adjective) having a sharp biting taste | - |
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| (adjective) showing a brooding ill humor | Synonyms: dark, dour, glowering, glum, moody, morose, saturnine, sullen |
| (adjective) inaccurate in pitch | Synonyms: false, off-key |
| (adjective) smelling of fermentation or staleness | Synonyms: rancid |
| (adjective) in an unpalatable state | Synonyms: off, turned |
| (adjective) one of the four basic taste sensations; like the taste of vinegar or lemons | - |