As an act of persons, to conceal is always intentional; one may hide his face in anger, grief, or abstraction; he conceals his face when he fears recognition.

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

Example sentences

hide It became so that I had to hide from the landlord.
dissemble Dissemble all your griefs and discontents.

Popularity over time

Word	1850 → 2019	Trend
conceal		rising
hide		rising
dissemble		rising
abscond		rising

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

By length

4 letters: keep¹, hide¹, mask¹, bury², veil¹
5 letters: cover², cloak¹
6 letters: screen¹, shroud¹, muffle²
7 letters: obscure², varnish², smother², secrete², envelop³, abscond²
8 letters: suppress², disguise², palliate
9 letters: obfuscate³, dissemble³

The small number after each word is its number of syllables (bury² = 2 syllables).

In other languages

Français: dissimuler
Español: disimular
Deutsch: verhehlen