適 - suitable, occasional, rare

proper quantity; suitable amount; proper dose; optimal dose

aptitude; aptness; suitability

suitable; appropriate; fitting; proper

moderate (degree); proper (amount); temperate; suitable

suitable age (esp. for marriage); marriageable age

inadequacy; inappropriateness; unfitness; impropriety

pleasant; agreeable; comfortable

conformity; compatibility; adaptability; congruity; congruence

adaptation; accommodation; conformity

reasonable; suitable

application (of a rule, law, method, etc.)

to fit; to suit