| certainly | (adverb) definitely or positively (`sure' is sometimes used informally for `surely') | Synonyms: for certain, for sure, sure, sure as shooting, sure enough, surely |
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| mainly | (adverb) for the most part | Synonyms: chiefly, in the main, primarily, principally |
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| plainly | (adverb) unmistakably (`plain' is often used informally for `plainly') | Synonyms: apparently, evidently, manifestly, obviously, patently, plain |
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| (adverb) in a simple manner; without extravagance or embellishment | Synonyms: simply |
| thinly | (adverb) without viscosity | Synonyms: thin |
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| (adverb) in a small quantity or extent | Synonyms: lightly |
| (adverb) in a widely distributed manner | - |
| (adverb) without force or sincere effort | - |
| uncertainly | (adverb) showing lack of certainty | - |
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| (adverb) in an unsteady manner | Synonyms: falteringly, unsteadily |
| vainly | (adverb) to no avail | Synonyms: in vain |
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