I could only find one word ending in "kr" and it doesn't start with an "f" or have five letters. Perhaps you're thinking of a six-letter word.
askr
adele
There are several trees that all start with the letter 'p' and are five letters long. The name of one tree that starts with the letter 'p' and is five letters long is the peach tree.
Roast
Elfin is one word that starts with e, has five letters, and the fourth letter is an i. A way to help find more words might be to make five spaces as you would in a game of hangman, and fill in the letters you know such as i and e.
A daisy, dance, decal and defect are things with five letters. A delay, diary, ditch and a drink are things with five letters.
adele
There are several trees that all start with the letter 'p' and are five letters long. The name of one tree that starts with the letter 'p' and is five letters long is the peach tree.
Roast
Elfin is one word that starts with e, has five letters, and the fourth letter is an i. A way to help find more words might be to make five spaces as you would in a game of hangman, and fill in the letters you know such as i and e.
A daisy, dance, decal and defect are things with five letters. A delay, diary, ditch and a drink are things with five letters.
Edger
Only one letter of the alphabet starts with t.
essay easel eases Elias
Fred Perry
snack food
Five letter words starting with G that can be made with those letters are giver and grove.
what is the first five letters that come after grudge