doubt
UK[daʊt]US[daʊt]
n
a feeling of uncertainty or lack of conviction
v
to feel uncertain about something; to question the truth or fact of something
Etymology
the word "doubt" entered english in the 13th century from old french 'douter', which itself descended from latin 'dubitare' (to hesitate, to be in two minds). the latin root is connected to 'duo' (two), conceptually linked to the idea of being of two minds or wavering between two possibilities. the modern spelling with a silent 'b' was solidified in the 14th-15th centuries as scribes, influenced by the latin etymology, reinserted the letter, though it has never been pronounced in the english form. this etymological journey from the concept of duality ("two-ness") to a state of uncertainty or lack of conviction illustrates a classic semantic shift from a concrete numerical idea to an abstract mental state.
Analysis
the word is a simplex unit in modern english. its core derives from the latin verb 'dubitare' meaning 'to hesitate, to waver', which is related to the latin adjective 'dubius' meaning 'wavering, doubtful'. the silent 'b' was introduced in middle english under the influence of latin spelling.
Examples
there is no doubt that she is the most qualified candidate for the job.
i doubt we will arrive on time if the traffic doesn't clear soon.
his sudden kindness cast doubt on his previous hostile intentions.