| ambivalent | (adjective) uncertain or unable to decide about what course to follow | - |
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| bivalent | (adjective) used of homologous chromosomes associated in pairs in synapsis | Synonyms: double |
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| (adjective) having a valence of two or having two valences | Synonyms: divalent |
| convalescent | (adjective) returning to health after illness or debility | Synonyms: recovering |
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| covalent | (adjective) of or relating to or characterized by covalence | - |
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| divalent | (adjective) having a valence of two or having two valences | Synonyms: bivalent |
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| equivalent | (adjective) being essentially equal to something | Synonyms: tantamount |
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| monovalent | (adjective) having a valence of 1 | Synonyms: univalent |
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| (adjective) containing only one kind of antibody | - |
| multivalent | (adjective) used of the association of three or more homologous chromosomes during the first division of meiosis | - |
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| (adjective) having more than one valence, or having a valence of 3 or higher | Synonyms: polyvalent |
| (adjective) having many values, meanings, or appeals | Synonyms: multi-valued |
| nonequivalent | (adjective) not equal or interchangeable in value, quantity, or significance | - |
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| pentavalent | (adjective) having a valence of five | - |
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| polyvalent | (adjective) having more than one valence, or having a valence of 3 or higher | Synonyms: multivalent |
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| (adjective) containing several antibodies each capable of counteracting a specific antigen | - |
| prevalent | (adjective) most frequent or common | Synonyms: dominant, predominant, prevailing, rife |
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| tetravalent | (adjective) having a valence of four | - |
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| trivalent | (adjective) having a valence of three | - |
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| univalent | (adjective) used of a chromosome that is not paired or united with its homologous chromosome during synapsis | - |
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| (adjective) having a valence of 1 | Synonyms: monovalent |
| unrivaled | (adjective) eminent beyond or above comparison | Synonyms: matchless, nonpareil, one, one and only, peerless, unmatchable, unmatched, unrivalled |
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| valedictory | (adjective) of or relating to an occasion or expression of farewell | - |
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| (adjective) of a speech expressing leave-taking | - |
| valent | (adjective) (chemistry) having valence; usually used in combination | - |
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| valetudinarian | (adjective) of or relating to or characteristic of a person who is a valetudinarian | Synonyms: valetudinary |
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| valetudinary | (adjective) of or relating to or characteristic of a person who is a valetudinarian | Synonyms: valetudinarian |
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