1 deficiency

2 lack

3 scarce

4 vacant post

5 to run short of

1 to lack

2 to be short of

3 lack

4 shortage

1 lack

2 shortage of

3 shortfall

4 to be short (of)

5 to lack

1 weak point

2 fault

3 shortcoming

4 disadvantage

5 classifier: 个 gè

1 necessary

2 must have

1 frugality prevents destitution (idiom)

1 better to have nothing (than substandard choice) (idiom); would prefer to go without than accept shoddy option

1 to cherish the outmoded and preserve the outworn (idiom); conservative

2 stickler for tradition

1 to remedy omissions and correct errors (idiom)