invalid
Same spelling, different roles.
An invalid invalid should not get benefits.
The sentence argues that someone who falsely claims disability should not receive benefits.
Meanings
not legally or factually valid; lacking force or correctness
- The contract was deemed invalid.
- An invalid argument cannot establish its conclusion.
a person made weak or disabled by illness or injury, often chronically
- She nursed her invalid mother for a decade.
- After the war, many veterans returned as invalids.
Word origin
Both senses descend from Latin invalidus ('not strong, weak'), formed from in- ('not') + validus ('strong, healthy'). The adjective sense ('not strong, not legally binding') and the noun sense ('a sick or disabled person') are essentially the same word — the noun is just the adjective applied to people. The stress shift between the two is a pure English innovation.
Fun fact
The shift in stress between the adjective and noun reflects how English sometimes creates two words from one Latin source. The Latin invalidus had a single accent pattern; English moved the stress in the noun to mark it as a different word — the same trick that produces 'record/record', 'present/present', and dozens of other heteronymic pairs.