Crossword clues for Mentally alert. 10 letters:ONONESTOESMentally alert.AGILEMentally alertSHARPMentally alertKEENERMore mentally alertNODOZProviding mental alertness sloganeerKEENMentally alert.ACUTEMentally alert.WITMental alertness.SANEMentally alertTOESOn one's ___ (mentally alert).