- aal4
- aasvogel15
- abacterial17
- abapical18
- abaxial18
- abbatial15
- abdominal18
- aberrational17
- abettal11
- abigail13
- abiological21
- abnormal16
- aboil9
- abomasal15
- aboral10
- aboriginal17
- abseil10
- abstractional21
- abuttal12
- abysmal16
- abyssal13
- academical21
- acaricidal18
- acaudal13
- accentual18
- accessional19
- accessorial18
- accidental19
- accommodational30
- accrual15
- acculturational26
- accusal15
- acetal10
- acetoxyl21
- acetyl12
- achenial15
- acidophil19
- acoustical18
- acquisitional28
- acquittal23
- acromial15
- acropetal16
- acrosomal16
- acrostical17
- actinal12
- actual11
- actuarial14
- acyl10
- adagial11
- adaptational18
- adaxial16
- additional14
- adenohypophyseal33
- adenohypophysial33
- adenoidal13
- adenoviral17
- adenyl11
- adhesional15
- adjectival28
- adjustmental28
- admiral12
- adnexal17
- adrenal10
- adrenocortical23
- adumbral17
- adventitial18
- adverbial18
- adversarial17
- advertorial17
- aecial10
- aecidial13
- aerial7
- aerobiological24
- aerodynamical24
- aerofoil12
- aerogel10
- aeromedical19
- aeronautical18
- aeronomical19
- aerosol8
- aesthetical17
- aestival13
- affectional22
- affinal15
- affixal21
- affixial22
- afoul10
- agential12
- aggregational21
- agitational15
- agnail10
- agonal10
- agrestal11
- agrichemical26
- agricultural21
- agrochemical26
- ahistorical17
- ahull10
- aidful12
- ail4