English word professional comes from English profession, English -al
| Dictionary entry | Language | Definition |
|---|---|---|
| profession | English (en) | A declaration of belief, faith or of one's opinion.. A promise or vow made on entering a religious order.. An occupation, trade, craft, or activity in which one has a professed expertise in a particular area; a job, especially one requiring a high level of skill or training.. The practitioners of such an occupation collectively. |
| -al | English (en) | (organic chemistry) Forms the names of aldehydes. Forming nouns, especially of verbal action.. Of or pertaining to. Adjectival suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also. |
| professional | English (en) | A person who belongs to a profession. A person who earns his living from a specified activity. A reputation known by name. An expert. (by extension) Expert.. Of, pertaining to, or in accordance with the (usually high) standards of a profession.. That is carried out for money, especially as a livelihood. |