sign

Synonyms: assurance augury auspice badge beacon bell caution clue divination flag flash foreboding foreknowledge foreshadowing foretoken forewarning gesture giveaway handwriting on wall harbinger herald high sign hint light manifestation mark nod note omen portent precursor prediction premonition presage presentiment prognostic proof signal suggestion symbol symptom token trace vestige warning wave whistle wink

Synonyms: badge board character cipher crest device emblem ensign guidepost insignia logo mark notice placard proof representation signboard signpost symbolization token type warning

Synonyms: acknowledge authorize autograph confirm endorse initial ink inscribe put john hancock on put john henry on rubber-stamp set one’s hand to signature subscribe witness

Synonyms: beckon express flag gesticulate gesture indicate motion signal signalize signify use sign language wave