Theory Definition: The definition of a theory is an idea to explain something, or a set of guiding principles. Synonyms: Belief, Postulate, Assumption, Speculation, Doctrine Antonyms: Practical, Realistic, Actual, Happening

Thick Definition: The definition of thick is great depth or dense. Synonyms: Broad, Bulky, Deep, Solid, Substantial Antonyms: Narrow, Slight, Slim, Thin, Clear

Thin Definition: The definition of thin is having little depth, being lean or not having a lot of something. Synonyms: Diluted, Narrow, Slim, Bony, Lean Antonyms: Strong, Sturdy, Heavy, Thick, Bulky

Thoughtful Definition: Someone who is pondering or someone that shows care or sympathy for others. Synonyms: Attentive, Circumspect, Heedful, Provident, Careful Antonyms: Carefree, Gay, Remiss, Reckless, Negligent

Timely Definition: The definition of timely refers to something done at a good and suitable time. Synonyms: Appropriate, Convenient, Punctual, Prompt, Early Antonyms: Tardy, Unseasonable, Late, Inopportune