What is the crossword answer for the clue: In that case

IFSO - a 4 letter word may be the answer you are looking for!

THEN - a 4 letter word may be the answer you are looking for!

IFIDO - a 5 letter word may be the answer you are looking for!

IF - a 2 letter word may be the answer you are looking for!

In that case

2 Character Answers:

IF

4 Character Answers:

IFSO

THEN

5 Character Answers:

IFIDO