Crossword clues for Acidulous. 4 letters:TARTSlightly acidulous.TARTAcidulous.SOURAcidulous.ACIDULOUSTartishACIDULOUSSlightly sourACIDULATEMake slightly sour.ACIDULOUSSourish.ACIDULOUSSourACIDULOUSCausticACIDULOUSSharp with asperity.ACIDULATEEmbitterSOURSBecomes acidulous.TARTERMore acidulous.VINEGARAcidulous speech.EMBITTERAcidulateSOURERMore acidulousACERBAcidulousSOURISHAcidulous