父さん, とうさん
See お父さん・1
father, dad, papa, pa, pop, daddy, dada
彼は父さんほど背が高くない。
が
Particle
1. indicates sentence subject (occasionally object)
2. indicates possessive (esp. in literary expressions)
Conjunction
3. but, however, still, and
after the volitional form of a verb
4. regardless of, whether (or not)