Dictionary

A

Agglomerate

Origin:-  Latin. agglomerare 'add to'
Word type:-  Verb.
Definition:-  Collect or form into a mass.
Word type:-  Noun.
Definition:-  A mass or collection of things.
Derivatives:-  Noun:   Agglomeration.

T

Taciturn

Origin:-  Latin. taciturnus, from tacitus  'silent'
Word type:-  Adjective
Definition:-  Reserved or uncommunicative in speech. Saying little.
Derivatives:-
Noun:-   Taciturnity  
Adverb:   Taciturnly
Synonyms:-   Quiet, Reserved, Silent, Uncommunicative, Unforthcoming.
Antonyms:-   Loquacious, Talkative.