Due to its importance in politics and in day-to-day life, there are many ways in both English and Hebrew of expressing the idea of making something absolutely clear.
Perhaps the most common such expression in Hebrew is חַד-מַשְׁמָעִי, translating to unequivocal or unambiguous in English.
הַמַּכַּבִּים הֶעֱבִירוּ לַיְּוָנִים מֶסֶר חַד-מַשְׁמָעִי.
The Maccabees communicated (literally, passed) an unequivocal message to the Greeks.
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