How many words start with STI?

23, from 5 letters up to 5. All of them are on this page.

What is the highest scoring word that start with STI?

STICK at 11 points in Scrabble, and STICK at 12 in Words With Friends, because the two games score the tiles differently.

STICH, STICK, STIED, STIES, STIFF, STILB, STILE, STILL, STILT, STIME and 13 more on this page.

23 of them: STICH, STICK, STIED, STIES, STIFF, STILB, STILE, STILL, STILT, STIME and more.

There are 23 of them. The highest scoring is STICK at 11 points in Scrabble, and the set averages 7.3.

Most common words first, then the rest A to Z.

The most familiar words on this page and what they mean. Tap any word for its full entry, score and anagrams.

STILL adjective not in physical motion
STICK verb put, fix, force, or implant
STIFF adjective not moving or operating freely
STING noun a kind of pain
STIES noun form of STY: an infection of the sebaceous gland of the eyelid
STILE noun an upright that is a member in a door or window frame
STILT noun a column of wood or steel or concrete that is driven into the ground to provide support for a structure
STINK verb smell badly and offensively
STINT noun an unbroken period of time during which you do something
STIPE noun supporting stalk or stem-like structure especially of a pistil or fern frond or supporting a mushroom cap

Definitions from Open English WordNet, CC BY 4.0.

All of them: Word lists.