Synonyms for indicate

Most common

1. Imply — to point out; to discover; to direct to a knowledge of; to show; to make known

2. Suggest

suggest, allude, argue, connote, insinuate, adumbrate rare

Other

warrant, depicture dated

v. 1
To point out; to discover; to direct to a knowledge of; to show; to make known.
The guard blew his whistle to indicate imminent departure.
v. 2
To show or manifest by symptoms.
Marked weakness unresponsive to dietary change and exercise may indicate an underlying neurologic or metabolic problem.

Past participle: indicated
e.g. indicated → implied, shown, signified, denoted…

Indicate, Intimate, Imply, Signify or Suggest?

One may indicate his wishes, intimate his plans, imply his opinion, signify his will, suggest a course of action.

J. C. Fernald, English Synonyms and Antonyms (1914)

Use in printed books, per decade from 1850 to 2019.

4 letters: show¹, name¹, mean¹, mark¹
5 letters: point¹, argue², imply²
6 letters: signal², reveal², denote², allude², evince²
7 letters: present², suggest², display², exhibit³, warrant², specify³, signify³, connote², bespeak²
8 letters: evidence³, manifest³
9 letters: represent³, designate³, insinuate⁴, adumbrate, depicture
11 letters: demonstrate³

The small number after each word is its number of syllables (argue² = 2 syllables).