言

I can't find the words to thank you; I can never thank you enough

subtext; implication; connotation; implicit meaning; between the lines

without saying a word

baby talk; baby language; babbling

fighting words; inflammatory words; provocative remark

Computing

programming language; programing language

(I am) not sure; (I) can't say which

to express in a roundabout way

replying; reply

to be asked to give someone (a message, parcel, etc.); to be asked to tell someone (that); to be entrusted with

fake kidnapping; staged kidnapping

language barrier

discriminatory remark; hate speech

Anatomy

language center (brain); language centre

to hesitate to say

language faculty

Proverb

one can say more with a look than with ten thousand words; the eyes cannot belie one's true thoughts; the eyes are the windows to the soul; eyes are as eloquent as the tongue

a single word; (not even) a word; (not even) a syllable

no matter what; whatever you say; in the end

to explain away; to answer evasively

restating; restatement

to pounce on someone's words; to cavil at someone's words; to trip someone up with their own words

having no hesitation in stating; having no hesitation in declaring

to tell a person (something) emphatically; to let a person have it