one thing is (for) sure
Definition of one thing is (for) sure
: it is certain : certainly One thing is (for) sure, we'll never eat there again.
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thingplay
: an object or entity not precisely designated or capable of being designated
: an inanimate object distinguished from a living being
: a separate and distinct individual quality, fact, idea, or usually entity
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sureplay
: safe from danger or harm
: firmly established : steadfast
: reliable, trustworthy
: surely
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