ὑποσημαίνειν
From LSJ
κραδία δὲ φόβῳ φρένα λακτίζει → my heart knocks at my ribs
Greek > English (Woodhouse Verbs Reversed)
(see also ὑποσημαίνω): hint, give an inkling of, glance at, hint at by innuendo, hint at indirectly, hint at obliquely, hint at, hint darkly at, hint mysteriously at, refer to covertly
Lexicon Thucydideum
significare, to indicate, signify, 1.82.3,
PASS. 6.32.1.