Enter criteria and click Find Words
Twenty eight words put I second and F third, and they split between two competing shapes.
GIFTS, FIFTH, FIFTY, RIFLE and LIFTS are the entries in general use. NIFTY and JIFFY come up often enough to be worth keeping in mind.
T takes the fourth box in eight of the twenty eight, giving GIFTS, LIFTS, RIFTS, SIFTS and NIFTY. F takes it in nine, giving RIFFS, TIFFS, JIFFY and MIFFS. Almost nothing sits outside those two.
Both put F in the first box and again in the third, which makes them awkward to spot when you are scanning for a repeated letter. They are also the two most useful words on the page.
If you have F confirmed at position three, testing whether it also opens the word is worth a turn. It splits the group in a way no other letter does.
S closes twelve of the twenty eight, forty three percent, with Y on six. Between them they take most of the last box.
RIFLE tests the L and E, which the FT and FF shapes never use. GIFTS confirms the commonest ending but tells you less.
Divided into two parts by a deep cleft, used in botany and anatomy. It is the most technical entry here.
Wind dried meat from Shetland. It is a dialect word and almost certainly not what a puzzle wants.
Nine of the twenty eight do, nearly all a doubled F. Short words built on stems like biff, jiff, miff, riff and tiff all keep the pair.