1603, John Florio, translating Michel de Montaigne, Essays, II.35:
The definition of investigate is to look into something or someone in order to try to discover the truth or to piece together a sequence of events.
(Informal) To work or study hard
To make a search or investigation:
To question formally, as to elicit facts or information; interrogate:
To delve into and make use of; exploit:
To search or examine with continued care; to seek diligently.
To observe and evaluate (a talented person), as for possible hiring.
To ask questions about (something); investigate or analyze:
To dig out (earth, soil, etc.)
Grub is defined as to dig, search through or work very hard.
(Music, often with "up") To begin a vocal note slightly below the target pitch and then to slide up to the target pitch, especially in country music.
To clean or dig out (a path, etc.) with a shovel
Spade means to dig.
Enter is defined as to come in, put in or get in.
The definition of cut into means to make an opening in, generally with something sharp.
To probe is to explore or investigate something.
Find another word for delve. In this page you can discover 26 synonyms, antonyms, idiomatic expressions, and related words for delve, like: search, explore, investigate, dig, seek, examine, mine, research, look into, scout and inquire.