What this suffix does
-tongued describes how someone speaks: silver-tongued (persuasive, smooth-talking), sharp-tongued (says cutting things).

Suffix · forms adjectives
Describes how someone talks: silver-tongued (persuasive, eloquent) and sharp-tongued (cutting, harsh in speech).
Written by Bryan López, English teacher · Updated
-tongued describes how someone speaks: silver-tongued (persuasive, smooth-talking), sharp-tongued (says cutting things).
Adjective + tongued.
This is not a productive rule you can apply freely: it is a closed set of fixed expressions. Learn them one by one as set phrases.
-tongued
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"Silver-tongued" can describe a genuinely eloquent and persuasive speaker (positive) or a smooth talker who uses persuasion to deceive (negative). In older literature it was often neutral or positive; in modern usage it frequently implies manipulation. Context and tone determine the charge. "A silver-tongued devil" is clearly negative; "a silver-tongued advocate" may be admiring.
"Forked-tongued" is a metaphor derived from the image of a snake's forked tongue, which seems to speak in two directions at once. It describes someone who says contradictory things to different audiences, who lies while appearing to tell the truth, or who makes promises they have no intention of keeping. It is always negative.
A trick to remember it
"Tongued" = tongued, literal for speech. Picture the tongue as a blade: silver-TONGUED = a silver tongue, smooth and persuasive. sharp-TONGUED = a sharp tongue, cuts with what it says.
Exercise 1 · Form the word
Exercise 2 · Pick the right one
"sharp-tongued" describes a critic who is...
The suffix -tongued describes how someone talks: silver-tongued (persuasive, eloquent) and sharp-tongued (cutting, harsh in speech). In Spanish it usually maps to de lengua / de palabras.
"silver" becomes "silver-tongued". It is a typical example of the -tongued suffix.
Describes the kind of edge something has, literal or figurative: double-edged (cuts both ways) and sharp-edged (sharp, cutting).
Describes someone's tone or style of speaking: soft-spoken (speaking gently) and outspoken (speaking one's mind bluntly).
Describes how quickly someone thinks: quick-witted (sharp, fast-thinking) versus dim-witted (slow, not very sharp).
-tion, -ness, -ful, -ly, -able... every ending you need to understand thousands of words at once.