1 five

2 5

1 unmarried

2 single

1 short

2 brief

3 to lack

4 weak point

5 fault

1 text message

2 SMS

1 fifth

1 lit. count by fives and tens (idiom); to narrate systematically and in full detail

1 lit. teacher for one day, father for ever (idiom)

1 devoid of fear (idiom)

2 intrepid

1 in groups of three or four (idiom)

1 to order again and again (idiom)