(1) Penalise (Verb) = subject toa penalty or punishment ; tocause someone a disadvantage;to punish someone for breakinga rule.Legalise (Verb) = make permissibleby law; legitimize ; toallow something by law.Look at the sentences :He was penalised early in thegame for unsportsmanlike conduct.The present tax system penalisespoor people.Same-sex marriages have beenlegalised in many states.