unspoken vs tongueless

unspoken and tongueless both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unspoken	No	Yes	No	No
tongueless	No	Yes	No	No

As adjectives, unspoken and tongueless are synonyms defined as:

Other synonyms of unspoken include mute, silent, wordless.

unspoken (adjective)	tongueless (adjective)
not made explicit	lacking a tongue
expressed without speech	expressed without speech