| contemporaneously | (adverb) during the same period of time | - |
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| disproportionately | (adverb) to a disproportionate degree | - |
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| (adverb) in a manner which is out of proportion | - |
| extemporaneously | (adverb) without prior preparation | Synonyms: extemporarily, extempore |
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| extemporarily | (adverb) without prior preparation | Synonyms: extemporaneously, extempore |
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| extempore | (adverb) without prior preparation | Synonyms: extemporaneously, extemporarily |
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| importantly | (adverb) in an important way | - |
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| (adverb) in an important way or to an important degree | Synonyms: significantly |
| importunately | (adverb) in a beseeching manner | Synonyms: beseechingly, entreatingly, imploringly, pleadingly |
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| inopportunely | (adverb) at an inconvenient time | Synonyms: malapropos |
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| opportunely | (adverb) conveniently | - |
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| pornographically | (adverb) in a pornographic manner | - |
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| portentously | (adverb) in a portentous manner | - |
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| proportionally | (adverb) to a proportionate degree | Synonyms: proportionately |
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| proportionately | (adverb) to a proportionate degree | Synonyms: proportionally |
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| (adverb) in a way that is in correspondence among the constituents of another entity | - |
| (adverb) in a way that agrees in amount, magnitude or degree | Synonyms: pro rata |
| purportedly | (adverb) believed or reputed to be the case | Synonyms: supposedly |
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| reportedly | (adverb) according to reports or other information | - |
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| sporadically | (adverb) in a sporadic manner | Synonyms: periodically |
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| sportingly | (adverb) so as to be sporting; in a sporting manner | - |
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| sportively | (adverb) in a merry sportive manner | - |
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| temporally | (adverb) with regard to temporal order | - |
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| temporarily | (adverb) for a limited time only; not permanently | - |
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| unsportingly | (adverb) in an unsportsmanlike manner | - |
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